[BUGFIX] Unify MetaTagApi removal methods

Add strtolower calls at `GenericMetaTagManager::removeProperty` to be in
sync with `PageRenderer::removeMetaTag`.

Resolves: #100198
Releases: main, 11.5
Change-Id: If758375d3293cbcd8897891a866c6cf6fb6df508
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78064


Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: core-ci <typo3@b13.com>

typo3/sysext/core/Classes/MetaTag/GenericMetaTagManager.php

@@ -143,6 +143,9 @@ final class GenericMetaTagManager implements MetaTagManagerInterface
      */
     public function removeProperty(string $property, string $type = '')
     {
+        $property = strtolower($property);
+        $type = strtolower($type);
+
         if (!empty($type)) {
             unset($this->properties[$property][$type]);
         } else {

typo3/sysext/core/Tests/Unit/MetaTag/GenericMetaTagManagerTest.php

@@ -146,7 +146,7 @@ class GenericMetaTagManagerTest extends UnitTestCase
 
         self::assertEquals([['content' => 'Description 1', 'subProperties' => []]], $manager->getProperty('description', 'property'));
 
-        $manager->removeProperty('description', 'property');
+        $manager->removeProperty('Description', 'Property');
         self::assertEquals([], $manager->getProperty('description', 'property'));
         self::assertEquals(
             [