-> the previous commit didn't properly set mFrontChild after restoring the topmost floaters
-> additionally we don't want mouse clicks in "can't steal focus from frontmost" floaters to set focus to them
- Typing 👍 doesn't replace the short code with the thumbs-up emoji
- Moving the mouse over the emoji complete panel highlights the wrong emoji when mScrollPos > 0
- Emoji complete panel is missing attributes
- Crash when attempting to show the tooltip for an emoji text segment
- Emoji autocomplete panel can sometimes show empty (type ':cat', select the heart eyed one, Ctrl-Z and then type 2 which should show the emoji for :cat2 but shows an empty square instead)