Fix missing warning on macOS
Fix missing warning on macOS

If you're building on macOS you're likely using clang, and
`-Wno-maybe-uninitialized` isn't a valid warning with Apple clang

Partial commit for third_party/*, see #14651.

Closes https://github.com/bazelbuild/bazel/pull/14651

Signed-off-by: Yun Peng <61282f22d8ab78e55084ec48c91c8acab588c1d7@google.com>

cushon/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,katre/bazel,katre/bazel,cushon/bazel,katre/bazel,cushon/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,cushon/bazel,katre/bazel,cushon/bazel,ButterflyNetwork/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,bazelbuild/bazel,katre/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,bazelbuild/bazel,cushon/bazel,katre/bazel