[TASK] Mock interfaces instead of abstract classes

`getMockForAbstractClass` has been (soft-)deprecated in PHPUnit 10.1:
sebastianbergmann/phpunit#5241

Hence, we should replace its usages to follow current best practices.

This changes tackles the classes where we can mock an interface
instead of an abstract class, allowing us to use `createMock` instead
of `getMockForAbstractClass`.

Resolves: #101609
Related: #101601
Releases: main, 12.4
Change-Id: I995f70d779a1bc6251bc4479c3dcb2ee548314f1
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/80458
Reviewed-by: Christian Kuhn <[email protected]>
Tested-by: core-ci <[email protected]>
Tested-by: Christian Kuhn <[email protected]>

Tests/Unit/Mvc/Property/PropertyMappingConfigurationTest.php

@@ -21,8 +21,8 @@
 use TYPO3\CMS\Core\Resource\ResourceFactory;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Property\PropertyMappingConfiguration as ExtbasePropertyMappingConfiguration;
-use TYPO3\CMS\Extbase\Validation\Validator\AbstractValidator;
 use TYPO3\CMS\Extbase\Validation\Validator\NotEmptyValidator;
+use TYPO3\CMS\Extbase\Validation\Validator\ValidatorInterface;
 use TYPO3\CMS\Extbase\Validation\ValidatorResolver;
 use TYPO3\CMS\Form\Domain\Model\FormDefinition;
 use TYPO3\CMS\Form\Domain\Model\FormElements\FileUpload;
@@ -266,7 +266,7 @@ public function afterBuildingFinishedSetsStoragePathToUserUploadIfNeitherSaveToF
     public function afterBuildingFinishedCopiesValidators(): void
     {
         // Some other Validator
-        $otherValidator = $this->getMockForAbstractClass(AbstractValidator::class);
+        $otherValidator = $this->createMock(ValidatorInterface::class);
 
         // Don't add any validators for now
         $validators = new \SplObjectStorage();