Add validation constraints to block_content.type.*

Problem/Motivation

Date formats have 1 property paths that are not yet validatable:

./vendor/bin/drush config:inspect --filter-keys=block_content.type.banner_block --detail --list-constraints --fields=key,validatability,constraints
➜  🤖 Analyzing…

 ------------------------------------------------------------ ------------- --------------------------------------------------------------------------------------------- 
  Key                                                          Validatable   Validation constraints                                                                       
 ------------------------------------------------------------ ------------- --------------------------------------------------------------------------------------------- 
  block_content.type.banner_block                              91%           ValidKeys: '<infer>'                                                                         
   block_content.type.banner_block:                            Validatable   ValidKeys: '<infer>'                                                                         
   block_content.type.banner_block:_core                       Validatable   ValidKeys:                                                                                   
                                                                               - default_config_hash                                                                      
   block_content.type.banner_block:_core.default_config_hash   Validatable   NotNull: {  }                                                                                
                                                                             Regex: '/^[a-zA-Z0-9\-_]+$/'                                                                 
                                                                             Length: 43                                                                                   
                                                                             ↣ PrimitiveType: {  }                                                                        
   block_content.type.banner_block:dependencies                Validatable   ValidKeys: '<infer>'                                                                         
   block_content.type.banner_block:description                 Validatable   Regex:                                                                                       
                                                                               pattern: '/([^\PC\x09\x0a\x0d])/u'                                                         
                                                                               match: false                                                                               
                                                                               message: 'Text is not allowed to contain control characters, only visible characters.'     
                                                                             ↣ PrimitiveType: {  }                                                                        
   block_content.type.banner_block:id                          Validatable   Regex:                                                                                       
                                                                               pattern: '/^[a-z0-9_]+$/'                                                                  
                                                                               message: 'The %value machine name is not valid.'                                           
                                                                             Length:                                                                                      
                                                                               max: 166                                                                                   
                                                                             ↣ PrimitiveType: {  }                                                                        
   block_content.type.banner_block:label                       Validatable   Regex:                                                                                       
                                                                               pattern: '/([^\PC])/u'                                                                     
                                                                               match: false                                                                               
                                                                               message: 'Labels are not allowed to span multiple lines or contain control characters.'    
                                                                             NotBlank: {  }                                                                               
                                                                             ↣ PrimitiveType: {  }                                                                        
   block_content.type.banner_block:langcode                    Validatable   NotNull: {  }                                                                                
                                                                             Choice:                                                                                      
                                                                               callback: 'Drupal\Core\TypedData\Plugin\DataType\LanguageReference::getAllValidLangcodes'  
                                                                             ↣ PrimitiveType: {  }                                                                        
   block_content.type.banner_block:revision                    NOT           ⚠️  @todo Add validation constraints to config entity type: block_content.type.*             
   block_content.type.banner_block:status                      Validatable   ↣ PrimitiveType: {  }                                                                        
   block_content.type.banner_block:uuid                        Validatable   Uuid: {  }                                                                                   
                                                                             ↣ PrimitiveType: {  }                     

On my local umami install, they are also with 4 in the top 10 of config objects the closest to 100% validatability. (See ./vendor/bin/drush config:inspect --todo=50)

Steps to reproduce

1. Get a local git clone of Drupal core 11.x.
2. composer require drupal/config_inspector — or manually install https://www.drupal.org/project/config_inspector/releases/2.1.5 or newer (which supports Drupal 11!)
3. composer require drush/drush
4. vendor/bin/drush config:inspect --filter-keys=block_content.type.banner_block --detail --list-constraints

Proposed resolution

Add validation constraints to:

1. block_content.type.*:revision

This requires looking at the existing code and admin UI (if any) to understand which values could be considered valid. Eventually this needs to be reviewed by the relevant subsystem maintainer.

For examples, search *.schema.yml files for the string constraints: 😊

Reach out to @borisson_ or @wimleers in the #distributions-and-recipes.

Remaining tasks

1. block_content.type.*:revision

User interface changes

None.

API changes

None.

Data model changes

More validation 🚀

Release notes snippet

None.