Performance: Added request cache to media type retrieval in media picker validation (#20405)

* Added request cache to media type retrieval in media picker validation.

* Applied suggestions from code review.

tests/Umbraco.Tests.UnitTests/Umbraco.Core/PropertyEditors/DataValueReferenceFactoryCollectionTests.cs

@@ -41,7 +41,8 @@ public class DataValueReferenceFactoryCollectionTests
                  Mock.Of<IDataTypeConfigurationCache>(),
                  Mock.Of<ILocalizedTextService>(),
                  Mock.Of<IMediaTypeService>(),
-                 Mock.Of<IMediaNavigationQueryService>()));
+                 Mock.Of<IMediaNavigationQueryService>(),
+                 AppCaches.Disabled));
 
     private IIOHelper IOHelper { get; } = Mock.Of<IIOHelper>();
 

tests/Umbraco.Tests.UnitTests/Umbraco.Core/PropertyEditors/MediaPicker3ValueEditorValidationTests.cs

@@ -218,7 +218,8 @@ internal class MediaPicker3ValueEditorValidationTests
             Mock.Of<IDataTypeConfigurationCache>(),
             Mock.Of<ILocalizedTextService>(),
             mediaTypeServiceMock.Object,
-            mediaNavigationQueryServiceMock.Object)
+            mediaNavigationQueryServiceMock.Object,
+            AppCaches.Disabled)
         {
             ConfigurationObject = new MediaPicker3Configuration()
         };