runtime: [HTTP/3] Stress test failures for GET Aborted scenario

Most of the failures (~399) are about scenario not getting an exception it expected to get from the server:

client_1  | System.Exception: Completed unexpectedly
client_1  |    at HttpStress.ClientOperations.<>c.<<get_Operations>b__1_4>d.MoveNext() in /app/ClientOperations.cs:line 313
client_1  | --- End of stack trace from previous location ---
client_1  |    at HttpStress.StressClient.<>c__DisplayClass17_0.<<StartCore>g__RunWorker|0>d.MoveNext() in /app/StressClient.cs:line 224

A small part of failures (~5) is:

client_1  | System.Net.Http.HttpRequestException: The server returned an invalid or unrecognized response.
client_1  |    at System.Net.Http.Http3RequestStream.ReadResponseAsync(CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/Http3RequestStream.cs:line 337
client_1  |    at System.Net.Http.Http3RequestStream.SendAsync(CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/Http3RequestStream.cs:line 304
client_1  |    at System.Net.Http.Http3RequestStream.SendAsync(CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/Http3RequestStream.cs:line 304
client_1  |    at System.Net.Http.Http3Connection.SendAsync(HttpRequestMessage request, Int64 queueStartingTimestamp, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/Http3Connection.cs:line 245
client_1  |    at System.Net.Http.HttpConnectionPool.TrySendUsingHttp3Async(HttpRequestMessage request, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 974
client_1  |    at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs:line 1116
client_1  |    at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/RedirectHandler.cs:line 85
client_1  |    at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken) in /_/src/libraries/System.Net.Http/src/System/Net/Http/HttpClient.cs:line 558
client_1  |    at HttpStress.RequestContext.SendAsync(HttpRequestMessage request, HttpCompletionOption httpCompletion, Nullable`1 token) in /app/ClientOperations.cs:line 108
client_1  |    at HttpStress.ClientOperations.<>c.<<get_Operations>b__1_4>d.MoveNext() in /app/ClientOperations.cs:line 313
client_1  | --- End of stack trace from previous location ---
client_1  |    at HttpStress.StressClient.<>c__DisplayClass17_0.<<StartCore>g__RunWorker|0>d.MoveNext() in /app/StressClient.cs:line 224

Last Main run: https://dev.azure.com/dnceng/public/_build/results?buildId=1890195&view=logs&j=0da5d1d9-276d-5173-c4c4-9d4d4ed14fdb&t=1451f5f3-0108-5a08-5b92-e984b2a85bbd&l=1632 Most recent run (on #72601) https://dev.azure.com/dnceng/public/_build/results?buildId=1895244&view=logs&j=0da5d1d9-276d-5173-c4c4-9d4d4ed14fdb&t=1451f5f3-0108-5a08-5b92-e984b2a85bbd&l=1596