Test Validation of Required Fields within Schema in Patternkit

Problem/Motivation

In RHDC, a migration from D7 to D9 may have introduced data into some patterns that don't match the schema. This seems to cause patternkit to omit validation checks when a required field in a schema isn't filled out.
This test is to validate that required fields within a schema are properly validated in patternkit.

Steps to reproduce

Pre-requisite

• Add "required": ["text"] in the schema file to make that particular field mandatory/required.

1. Enable Patternkit and Patternkit example module.
2. Configure a node type and enable layout builder.
3. Add a new content with layout builder enabled and fill out the required field.
4. Go to layout builder tab.
5. Add [Patternkit] Example block
6. Don't give any input in the text field which is required
7. Click on add/save block

Success Criteria

• On save, any required fields on a pattern are filled out
• If any data in the pattern doesn't match the schema
• Fail validation and provide opportunity for the editor to fix
• Display validation failure information to guide the editor
• Don't allow submission of the form

API changes

N/A

Data model changes

N/A