Error when creating a component without template

Problem/Motivation

WSOD when creating a component YAML file without template.

Steps to reproduce

• Fresh Drupal install (10.2) & SDC enabled
• Create and enable as default a new "mytheme" (sub-)theme
• Create a new "my-component" component (yaml + twig)
• Display the "my-component" component in a twig template using the include() method
• Create a new "another-component" component without template (yml only)
• Rebuild cache

Expected result: page loads correctly

Actual result :

• Drupal\sdc\Exception\InvalidComponentException: Unable to find the Twig template for the component "mytheme:another-component"
• Deprecated function: basename(): Passing null to parameter #1 ($path) of type string is deprecated in Drupal\sdc\ComponentPluginManager->alterDefinition() (line 323 of core/modules/sdc/src/ComponentPluginManager.php).

I feel like adding a valid yml file without a template should not throw an error.

Proposed resolution

Allow to add valid .component.yml files without throwing an error, if template is missing then component should just be ignored.

Remaining tasks

• Add a if statement around the basename($template) call to avoid deprecation warning
• Remove the definition from the definitions array is no template is provided

User interface changes

None

API changes

None

Data model changes

None

Release notes snippet

None