Improve handling of "ghost" pressing super key in open menu

[spotlesscoder]

Problem

Sometimes I accidentally do a single press of the super key after opening the menu with "Super + Space" key.
Then, I cannot search the app I want by simply typing it's name because the shortcuts info screen has the focus.
After pressing the super key again, the shortcuts info is closed but the cursor focus does not go back to the app menu.

Proposal

Block super shortcuts info screen so it does not open while app menu has focus.
Alternative: restore keyboard cursor focus properly

Prior Art (Optional)

No response