Fix EntityContainer.GetUdi() for member type containers

[ronaldbarendse]

Besides the preparations done in #20715 to support member type containers, I encountered an issue in 17.0.0-rc2 while trying to add initial support in Deploy.

Within Deploy, notification handlers are registered for all entity container operations (e.g. EntityContainerSavedNotification) to ensure schema/UDA files and signatures are updated. However, this caused the following exception:

NotSupportedException: Contained object type 9b5416fb-e72f-45a9-a07b-5a9a2709ce43 is not supported.
   at Umbraco.Cms.Infrastructure.Scoping.Scope.TryFinally(Action[] actions)
   at Umbraco.Cms.Infrastructure.Scoping.Scope.Dispose()
   at Umbraco.Cms.Core.Services.EntityTypeContainerService`2.SaveAsync(EntityContainer container, Guid userKey, Func`1 operationValidation, AuditType auditType)
   at Umbraco.Cms.Core.Services.EntityTypeContainerService`2.SaveAsync(EntityContainer container, Guid userKey, Func`1 operationValidation, AuditType auditType)
   at Umbraco.Cms.Core.Services.EntityTypeContainerService`2.CreateAsync(Nullable`1 key, String name, Nullable`1 parentKey, Guid userKey)
   at Umbraco.Cms.Api.Management.Controllers.FolderManagementControllerBase`1.CreateFolderAsync[TCreatedActionController](CreateFolderRequestModel createFolderRequestModel, Expression`1 createdAction)
   at Umbraco.Cms.Api.Management.Controllers.MemberType.Folder.CreateMemberTypeFolderController.Create(CancellationToken cancellationToken, CreateFolderRequestModel createFolderRequestModel)
...

Although not obvious from the stack trace, searching for the error message highlighted the EntityContainer.GetUdi() extension method not yet updated to support this new object type. And Deploy uses UDIs when updating the schema/signatures, so it makes sense that this only occurred when its installed.

Besides adding the missing member type, I've ordered them alphabetically now and updated the test to ensure the correct UDI is returned.

[AndyButland]

Good catch, thanks @ronaldbarendse. This will come in 17.0-rc3.

[Copilot]

Pull Request Overview

This PR fixes a NotSupportedException that occurred when using Umbraco Deploy with member type containers by adding missing support for member type containers in the EntityContainer.GetUdi() extension method. The changes also improve code organization by alphabetizing the container type entries.

Key changes:

• Added MemberType container support to GetUdi() extension method
• Alphabetized container type entries across all affected files for better maintainability
• Fixed incorrect null comparison for Guid value type in GetContainedObjectType()

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/Umbraco.Core/Extensions/UdiGetterExtensions.cs	Added MemberType container case and reordered cases alphabetically
src/Umbraco.Core/Models/EntityContainer.cs	Alphabetized ObjectTypeMap entries and fixed null comparison bug for Guid
tests/Umbraco.Tests.UnitTests/Umbraco.Core/Extensions/UdiGetterExtensionsTests.cs	Added test case for MemberType container and reordered test cases alphabetically