Add ase channel validation

[fangyangci]

Description

To resolve the connection issue between DL_ASE and bot, we built DL_ASE v2.0. In v2.0, we used WebSocket/HTTPS instead of named pipe to connect between DL_ASE and bot.

Therefore, we need to add a special header validation for AseChannel.

Specific Changes

1. Add AseChannel channelId check in ConfigurationBotFrameworkAuthentication.
2. Fix a potential bug with USGov OAuthEndpoint while using SingleTenant.

Testing

Adding unit tests here is not straightforward, similar to EmulatorValidation and ChannelValidation.
I tested this feature locally and also using end-to-end tests in DL_ASE 2.0 within SingleTenant/MultiTenant/UMSI in Public/US Gov Cloud.

[Danieladu]

Please decouple the OAuthEndpoint fix and new ASE channel support. I think they are two things, right?

[Danieladu]

It is better to add the unit test or functional test.
Such as the tests in JwtTokenExtractorTests, BotFrameworkAdapterTests, JwtTokenValidationTests

[fangyangci]

Please decouple the OAuthEndpoint fix and new ASE channel support. I think they are two things, right?

I split the USGov SingleTenant bug to a new pr.
#6714