mitigation for quic tests hangs (#55985)

Author: wfurt

src/libraries/System.Net.Quic/src/System/Net/Quic/Implementations/MsQuic/MsQuicStream.cs

@@ -651,7 +651,9 @@ internal override int Read(Span<byte> buffer)
             byte[] rentedBuffer = ArrayPool<byte>.Shared.Rent(buffer.Length);
             try
             {
-                int readLength = ReadAsync(new Memory<byte>(rentedBuffer, 0, buffer.Length)).AsTask().GetAwaiter().GetResult();
+                Task<int> t = ReadAsync(new Memory<byte>(rentedBuffer, 0, buffer.Length)).AsTask();
+                ((IAsyncResult)t).AsyncWaitHandle.WaitOne();
+                int readLength = t.GetAwaiter().GetResult();
                 rentedBuffer.AsSpan(0, readLength).CopyTo(buffer);
                 return readLength;
             }
@@ -666,7 +668,9 @@ internal override void Write(ReadOnlySpan<byte> buffer)
             ThrowIfDisposed();
 
             // TODO: optimize this.
-            WriteAsync(buffer.ToArray()).AsTask().GetAwaiter().GetResult();
+            Task t = WriteAsync(buffer.ToArray()).AsTask();
+            ((IAsyncResult)t).AsyncWaitHandle.WaitOne();
+            t.GetAwaiter().GetResult();
         }
 
         // MsQuic doesn't support explicit flushing