feat/1421 updated tests to fix flakyness - removed delay before assertion that is causing upstream connection from proxy to teardown prematurely before test ends

Author: jayaraman-venkatesan

test/WireMock.Net.Tests/WebSockets/WebSocketIntegrationTests.cs

@@ -813,9 +813,9 @@ public async Task WithWebSocketProxy_Should_Proxy_Binary_Messages()
 
         var receivedData = await client.ReceiveAsBytesAsync(cancellationToken: _ct);
 
-        await Task.Delay(500, _ct);
-
-        // Assert
+        // Assert immediately — receivedData is already in memory, no delay needed.
+        // Delaying here gives the proxy time to tear down its upstream connection, which
+        // causes the close handshake below to fail intermittently.
         receivedData.Should().BeEquivalentTo(testData, "binary data should be proxied and echoed back");
 
         await client.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);