If running in editor, always disable window mode features ("always on top"/"transparent"/"clickthrough")

[JaviCepa]

I sometimes accidentally click play in editor scenes, the windows gets all messed up and I have to restart Unity.
It'd be nice to have an option to disable the window options while in editor mode (always on top/transparent/clickthrough).

I can't think of any cases where it should be interesting to have them enabled on editor.

A warning could be displayed instead.

[screenshakes]

Thank you, I added this in bd6f2e5.