Property level validation for Management API (#15644)

* Property level validation for content - initial implementation

* Always succeed create/update regardless of property level validation errors

* Move old complex editor validation classes to Web.BackOffice so they will be deleted

* Include operation status and property validation errors in ProblemDetails

* Refactor property validation to its own service(s)

* Make the problem details builder a little more generic towards extensions

* Validation for item and branch publish

* Moved malplaced test

* Get rid of a TODO

* Integration tests for content validation service

* Simplify validation service

* Add missing response types to create and update for document and media

* Remove test that no longer applies

* Use "errors" for model validation errors (property validation errors)

* Split create/update and validation into their own endpoints

* Fix forward merge

* Correct wrong assumption for missing properties

* Remove localization from validation error messages - decreases dependencies, adds a lot of obsolete constructors

* Reuse existing validation service + support custom error messages

* Fix merge errors

* Review comments

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Models/VariationTests.cs

@@ -624,14 +624,12 @@ public class VariationTests
     {
         var ioHelper = Mock.Of<IIOHelper>();
         var dataTypeService = Mock.Of<IDataTypeService>();
-        var localizedTextService = Mock.Of<ILocalizedTextService>();
         var editorConfigurationParser = Mock.Of<IEditorConfigurationParser>();
 
         var attribute = new DataEditorAttribute("a", "a", "a");
         var dataValueEditorFactory = Mock.Of<IDataValueEditorFactory>(x
             => x.Create<TextOnlyValueEditor>(It.IsAny<DataEditorAttribute>()) == new TextOnlyValueEditor(
                 attribute,
-                localizedTextService,
                 Mock.Of<IShortStringHelper>(),
                 new JsonNetSerializer(),
                 Mock.Of<IIOHelper>()));
@@ -652,7 +650,6 @@ public class VariationTests
         return new PropertyValidationService(
             propertyEditorCollection,
             dataTypeService,
-            localizedTextService,
             new ValueEditorCache());
     }
 }