[Feature] Fix the renamed parameter model name

[ArthurMa1978]

The codegen can auto rename a model to XXXXContent if this model is only referenced once and the suffix is Parameter .
Then if this model is used in other operations in the new swagger, then this renaming mechanism will fail and cause breaking change.

The codegen should keep this kind of renames in any new versions.

[ArthurMa1978]

This will move to MPG.

[haiyuazhang]

Investigated the MPG generator (eng/packages/http-client-csharp-mgmt in azure-sdk-for-net). The legacy autorest.csharp behavior — renaming a model to XXXContent when it's referenced only once and has a Parameter suffix — does not exist in MPG.

Instead, MPG's NameVisitor renames resource update-body models deterministically based on semantic role, not reference count:

• {Resource}CreateOrUpdateContent when the model is used as both create and update body
• {Resource}Patch when only used as the patch/update body
• Honors @@clientName overrides on the patch-only path

Because the rename is anchored to resource/role semantics rather than usage count, the breaking-change scenario described here (rename flipping when a model becomes referenced by additional operations in a new version) doesn't apply to MPG. I think this issue can be closed as not applicable to MPG.