fix: Don't bind to meow-keypad-state-keymap

[45mg]

If any key in this keymap is bound to something other than self-insert-command, it is impossible to use any keybinding containing that key, because the binding will be interrupted by said command. This can put Meow in a state where it is impossible to exit Keypad state.

These bindings appear to have been a mistake as nothing like this is present in any of the example meow-setup functions.

A trivial example of the issue - one cannot use the binding C-x 0.