Datatype configuration refactor (#13605)

* Moved refactor from V12 based branch

* Remove obsolete config property to avoid obsoletion warnings

* Clean up test models

* Make the datatype API a little less confusing by introducing explicit models for create and update

* Remame "Configuration" to "Data" to make FE happy :)

* Safeguard deserialization of empty configs

* Less strict number handling for deserialization

* Prepare for data type config migrations

* Attempt to have contextual config serializers

* Update OpenAPI spec with (temporary) data type controller

* Fix unit tests

* Update compat suppressions (allow breakage for datatype and configuration editor)

* Make the duplicate JsonObjectConverter implementation private

src/Umbraco.Core/ContentApps/ListViewContentAppFactory.cs

@@ -80,7 +80,7 @@ public class ListViewContentAppFactory : IContentAppFactory
             throw new NullReferenceException("The property editor with alias " + dt.EditorAlias + " does not exist");
         }
 
-        IDictionary<string, object?> listViewConfig = editor.GetConfigurationEditor().ToConfigurationEditorNullable(dt.Configuration);
+        IDictionary<string, object> listViewConfig = editor.GetConfigurationEditor().ToConfigurationEditor(dt.ConfigurationData);
 
         // add the entity type to the config
         listViewConfig["entityType"] = entityType;
@@ -122,7 +122,7 @@ public class ListViewContentAppFactory : IContentAppFactory
                 Value = null,
                 View = editor.GetValueEditor().View,
                 HideLabel = true,
-                ConfigNullable = listViewConfig,
+                Config = listViewConfig,
             },
         };