keymap validation: Improve message for action that takes no input (#37877)
See
https://github.com/zed-industries/zed/issues/26370#issuecomment-3200022302
Before (user screenshot):
<img width="650" height="127" alt="Image"
src="https://github.com/user-attachments/assets/9548ce43-657e-46ef-b6be-b95489167ac2"
/>
After (my screenshot):
<img width="616" height="229" alt="image"
src="https://github.com/user-attachments/assets/09028305-e7bb-4a31-bb87-55effbec26f3"
/>
Release Notes:
- N/A
2f40a3bdfaMichael Sloan committed on 9/9/2025, 8:56:29 PM· committed by GitHubparent304af66