[macOS] Window interaction stopping when shimeji is clicked

[LavenderSnek]

ActiveIE should ignore all windows from shimeji (also fixes crash when mascot tries to move own window). Similar to original mac JNA implementation

The existing implementation of just checking if the app has a bundle no longer works. The goal was to get it work properly when multiple instances of shimeji were running (and therefore did not use pid).

Might need to look into other options such as the Quartz APIs.