Fix bug (#16) preventing setting hotkeys sometimes

Hotkey boxes wouldn't lose focus when pressing a key, preventing them from being set on some versions (caught on Garuda Linux with KDE). This change fixes this. Thanks to @paulitepsa for finding and fixing this!

src/ui/ui_controller.py

@@ -1665,8 +1665,10 @@ def _handle_key_press(
                     self._hotkey_box_to_change = hotkey_box
                     self._hotkey_box_key_code = key_code
                     self._hotkey_box_key_name = key_name
-                    return
 
+                hotkey_box.clearFocus()
+                return
+
         # Use #2 (set "hotkey pressed" flag for _react_to_hotkey_flags)
         if not self._settings_window.isVisible():
             for hotkey_pressed, setting in {