There are problems internal to GTK that mean creating choice boxes with
a lot of items is a very slow process. This hack works around one of
those issues to make it faster to create and display the menu in the
choice box.
Fixes https://gitlab.com/kicad/code/kicad/-/issues/14277
Mac and some Linux configs disable menu icons. We shouldn't offer the
option when the system does not support this as it leads to confusion
Fixes https://gitlab.com/kicad/code/kicad/issues/10425
Before, it was possible for the canvas to steal the
focus if the cursor was only moved over it and not
clicked. Now, the canvas will only take the focus if
the frame is active.
Fixes https://gitlab.com/kicad/code/kicad/issues/7233
* Implement ReparentQuasiModal for OSX natively
* Implement ForceFocus of OSX natively
This change means we no longer rely on the kicad-specific functions in our osx wx fork.