Move Customer.CustomerSettingChangeTracker to NON_STANDARD_LOCATION
Despite the proper implementation of IRefPropertyChangeTrackerResolver interface a unit test `Existing_Customer_Removed_With_Modified_CustomerSetting_Has_Children_ModifiedProperties_Cleared` keeps failing
Fix: SetModifiedProperties function directly scans for RefPropertyChangeTracker of the M-1 property bypassing GetRefPropertyChangeTracker mechanism.
This is getting critical in case of a non-standard location of the RefPropertyChangeTracker when it is supposed to be delivered by the IRefPropertyChangeTrackerResolver interface.