Add WS2022 to OsSupport check for Bidirectional Streaming

src/libraries/System.Net.Http.WinHttpHandler/tests/FunctionalTests/BidirectionStreamingTest.cs

@@ -22,7 +22,9 @@ public BidirectionStreamingTest(ITestOutputHelper output) : base(output)
 
         // Build number suggested by the WinHttp team.
         // It can be reduced if bidirectional streaming is backported.
-        public static bool OsSupportsWinHttpBidirectionalStreaming => Environment.OSVersion.Version >= new Version(10, 0, 22357, 0);
+        public static bool OsSupportsWinHttpBidirectionalStreaming => Environment.OSVersion.Version >= new Version(10, 0, 22357, 0)
+            || Environment.OSVersion.Version == new Version(10, 0, 20348, 0); // This is required for WS2022
+                                                                              // because WINHTTP_FLAG_AUTOMATIC_CHUNKING is backported to WS2022.
 
         public static bool TestsEnabled => OsSupportsWinHttpBidirectionalStreaming && PlatformDetection.SupportsAlpn;