Turn off error notifications on macOS

[wenfangdu]

Previously on Windows, I wrote a lot of ahk scripts, when viewing them on macOS, ahk++ sends error notification:

I need mostly syntax highlighting on macOS with ahk++, constantly sending error popups makes it unusable.
A better way is to send error notifications when actually running the scripts on macOS not when viewing them.

[mark-wiemer]

Good catch, I should be able to push a quick fix here before my vacation next month :)

[mark-wiemer]

Closing as a duplicate of #493