EntraID doesn't support 'resource' parameter when getting auth-code and token #741

Describe the bug
When integrate MCP Client with EntraID via OAuth (hardcode ClientID, ClientSecret), there will be an error saying that AADSTS901002: The 'resource' request parameter is not supported.
I removed the parameter 'resource' in the url then it works.
The same as the payload when retrieve token, there will be 400 - Bad Request if including 'resource'. Modify the code in 'ClientOAuthProvider.cs' to remove 'resource', then it works.

To Reproduce
Steps to reproduce the behavior:

1. Configure simple MCP Server, MCP Client by following this post https://techcommunity.microsoft.com/blog/appsonazureblog/smart-ai-integration-with-the-model-context-protocol-mcp-part-5/4433422
2. In MCP Client, define SseClientTransport with ClientId, ClientSecret:

3. Start MCP Server, start MCP Client

Expected behavior
Can integrate MCP with EntraID normally. Might have option to skip 'resource'.

Logs
N/A

Additional context
N/A