[BUG] Long Running operation fails in CosmosDB

[MehaKaushik]

Describe the bug
When target framework is .NET Framework then creating/updating/deleting CosmosDB Resources fails with: Long Running operation fails with "code": "Unauthorized" and "message":"Unable to authenticate the request. The request requires valid user authentication."

The resource is created but it is reported as Failing.
Expected behavior
The operation should not fail and the created resource should be returned.

Actual behavior (include Exception or Stack Trace)
Request:

Response:

Environment:

• Name and version of the Library package used: [e.g. Azure.Storage.Blobs 12.2.0]
• Hosting platform or OS and .NET runtime versionRuntime Environment:
  OS Name: Windows
  OS Version: 10.0.18363
  OS Platform: Windows
  RID: win10-x64
  Base Path: C:\Program Files\dotnet\sdk\3.1.101\
• IDE and version : [e.g. Visual Studio 19]
• Dotnet Framework 4.8