<img width="2940" height="1720" alt="keymap-dark"
src="https://github.com/user-attachments/assets/f4c28b4f-6a33-4479-a24f-c95d64a790c3"
/>
Closes #64964.

Use a dedicated forward Delete icon (⌦) instead of Backspace (⌫). Add a
regression test for distinct icons.

Release Notes:

- Fixed identical Backspace and Delete icons in the keymap editor.