bug#81510: 31.0.90; NS (macOS): clicking a disabled (:enable nil) tab-bar item crases Emacs

On 04/08/2026, Alan Third wrote:
> If a NO_EVENT event is never required to go in any queue, we can get
> away with the attached. This should prevent us from putting NO_EVENT's
> into either queue from any of the event functions.

I've tested this and it does indeed prevent the crash and I think it's
the better solution.

I am not sure if condition the XSETFRAME on NO_EVENT is correct since I
don't quite understand why it's needed.

-- Al