Tests: disable Asynchronous.Use on Windows

Disable this test on Windows as this is exposing a latent UB in the
Concurrency runtime.  It seems better to safely disable this test on
Windows for the time being until the runtime is fixed.

Author: compnerd

Tests/Functional/Asynchronous/Use/main.swift

@@ -3,6 +3,8 @@
 // RUN: %{xctest_checker} %t %s
 // REQUIRES: concurrency_runtime
 
+// UNSUPPORTED: OS=windows
+
 #if os(macOS)
     import SwiftXCTest
 #else
@@ -57,7 +59,7 @@ class AsyncAwaitTests: XCTestCase {
     override func setUp() async throws {}
 
     override func tearDown() async throws {}
-    
+
     // CHECK: Test Case 'AsyncAwaitTests.test_explicitFailures_withinAsyncTests_areReported' started at \d+-\d+-\d+ \d+:\d+:\d+\.\d+
     // CHECK: .*[/\\]Asynchronous[/\\]Use[/\\]main.swift:[[@LINE+3]]: error: AsyncAwaitTests.test_explicitFailures_withinAsyncTests_areReported : XCTAssertTrue failed -
     // CHECK: Test Case 'AsyncAwaitTests.test_explicitFailures_withinAsyncTests_areReported' failed \(\d+\.\d+ seconds\)

Tests/Functional/lit.cfg

@@ -148,3 +148,5 @@ os_is_not_macOS = run_os != 'Darwin'
 macOS_version_is_recent_enough = parse_version(run_vers) >= parse_version('12.0')
 if os_is_not_macOS or macOS_version_is_recent_enough:
     config.available_features.add('concurrency_runtime')
+if run_os == 'Windows':
+    config.available_features.add('OS=windows')