tests/functional: Skip aarch64_replay test on macOS

tests/functional: Skip aarch64_replay test on macOS

As of v10.0.0-rc2 this test is still failing on macos:

  $ make check-functional-aarch64 V=1
  ...
  ERROR:../../replay/replay-internal.c:235:replay_mutex_unlock: assertion failed: (replay_mutex_locked())
  Bail out! ERROR:../../replay/replay-internal.c:235:replay_mutex_unlock: assertion failed: (replay_mutex_locked())

This is tracked as https://gitlab.com/qemu-project/qemu/-/issues/2907

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250403203241.46692-4-philmd@linaro.org>