Support Azure.ResourceManager.Legacy.TrackedResourceWithOptionalLocation (#53496)

* Initial plan

* WIP: Add support for TrackedResourceWithOptionalLocation

Added mapping in KnownManagementTypes.cs and updated baz.tsp to use Legacy.TrackedResourceWithOptionalLocation. Emitter logic partially implemented but needs refinement to avoid affecting other models.

Co-authored-by: live1206 <[email protected]>

* Support TrackedResourceWithOptionalLocation - nearly complete

- Added mapping in KnownManagementTypes.cs
- Updated baz.tsp to use Legacy.TrackedResourceWithOptionalLocation
- Implemented emitter logic to set correct base model cross-language ID
- BazData now extends TrackedResourceData as expected
- Remaining: 3 build errors due to duplicate properties (Tags, Location) and constructor signature mismatch - these should be handled by InheritableSystemObjectModelVisitor but require further investigation

Co-authored-by: live1206 <[email protected]>

* Revert emitter.ts changes as requested

Co-authored-by: live1206 <[email protected]>

* Regenerate mgmt test projects with updated baz.tsp

Co-authored-by: live1206 <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: live1206 <[email protected]>

Author: Copilot

eng/packages/http-client-csharp-mgmt/generator/Azure.Generator.Management/src/Primitives/KnownManagementTypes.cs

@@ -34,6 +34,7 @@ internal class KnownManagementTypes
             ["Azure.ResourceManager.CommonTypes.ExtensionResource"] = typeof(ResourceData),
             ["Azure.ResourceManager.CommonTypes.Resource"] = typeof(ResourceData),
             ["Azure.ResourceManager.CommonTypes.TrackedResource"] = typeof(TrackedResourceData),
+            ["Azure.ResourceManager.Legacy.TrackedResourceWithOptionalLocation"] = typeof(TrackedResourceData),
         };
 
         private static readonly IReadOnlyDictionary<string, CSharpType> _idToSystemTypeMap = new Dictionary<string, CSharpType>()

eng/packages/http-client-csharp-mgmt/generator/TestProjects/Local/Mgmt-TypeSpec/baz.tsp

@@ -8,7 +8,7 @@ using Azure.ClientGenerator.Core;
 namespace MgmtTypeSpec;
 
 @resource("bazs")
-model Baz is TrackedResource<BazProperties> {
+model Baz is Azure.ResourceManager.Legacy.TrackedResourceWithOptionalLocation<BazProperties> {
   ...ResourceNameParameter<Baz, SegmentName = "bazs">;
 }