Rename AcquireJobRequest::StreamID to AcquireJobRequest::JobMessageID (#2547)

* Rename AcquireJobRequest::StreamID to AcquireJobRequest::JobMessageID to match corresponding server-side update.
* appeased the linter
* Added unit tests to prove AcquireJobRequest serialization/deserialization is as-expected.
* Distinguish unit test variations.
* Incorporated PR Feedback.

src/Sdk/RSWebApi/RunServiceHttpClient.cs

@@ -64,7 +64,8 @@ namespace GitHub.Actions.RunService.WebApi
             HttpMethod httpMethod = new HttpMethod("POST");
             var payload = new AcquireJobRequest
             {
-                StreamID = messageId
+                JobMessageId = messageId,
+                StreamId = messageId,
             };
 
             requestUri = new Uri(requestUri, "acquirejob");