[libc++] Re-enable the _BitInt test for std::atomic on Clang 14

[ldionne]

Summary

It should now work since the Clang on CI nodes has been updated.

[ldionne]

Rebase to check whether CI has picked up a recent nightly build.

[ldionne]

Rebase onto main

[ldionne]

Rebase onto main.

[ldionne]

Rebase onto main to trigger CI -- this should be ready to go now based on local testing.

[ldionne]

Ping CI.

libcxx/test/libcxx/atomics/bit-int.verify.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // <atomic>
 
 // Make sure that `std::atomic` doesn't work with `_BitInt`. The intent is to
 // disable them for now until their behavior can be designed better later.
 // See https://reviews.llvm.org/D84049 for details.
 
-// TODO(ldionne): Re-enable the test on clang-14 once 6c75ab5f66b4 lands in the CI.
 // UNSUPPORTED: apple-clang-12, apple-clang-13
-// UNSUPPORTED: clang-12, clang-13, clang-14
+// UNSUPPORTED: clang-12, clang-13
 
 // UNSUPPORTED: c++03
 
 #include <atomic>
 
 int main(int, char**)
 {
   // expected-error@atomic:*1 {{_Atomic cannot be applied to integer type '_BitInt(32)'}}
   std::atomic<_BitInt(32)> x(42);
 
   return 0;
 }