V14: Extend IContentEntitySlim (#15890)

* Extend EntitySlim with key

* Add ListView to GenericContentEntityDto and ContentEntitySlim

* Move ContentTypeKey and ListViewKey back to BaseDto

* Remove extra DB call when mapping to DocumentTypeReferenceResponseModel

* Remove extra DB call when mapping to MediaTypeReferenceResponseModel

* Remove duplicate db call for members

* Remove now redundant base class

* Fix comment

src/Umbraco.Core/Models/Entities/ContentEntitySlim.cs

@@ -8,6 +8,11 @@ public class ContentEntitySlim : EntitySlim, IContentEntitySlim
     /// <inheritdoc />
     public string ContentTypeAlias { get; set; } = string.Empty;
 
+    /// <inheritdoc />
+    public Guid ContentTypeKey { get; set; }
+
+    public Guid? ListViewKey { get; set; }
+
     /// <inheritdoc />
     public string? ContentTypeIcon { get; set; }
 

src/Umbraco.Core/Models/Entities/IContentEntitySlim.cs

@@ -10,6 +10,16 @@ public interface IContentEntitySlim : IEntitySlim
     /// </summary>
     string ContentTypeAlias { get; }
 
+    /// <summary>
+    /// Gets the content type key.
+    /// </summary>
+    Guid ContentTypeKey { get; }
+
+    /// <summary>
+    /// Gets the listview key.
+    /// </summary>
+    Guid? ListViewKey { get; }
+
     /// <summary>
     ///     Gets the content type icon.
     /// </summary>