Cmd+Delete in inline "Ask a question" hover deletes the last chat turn instead of editing the focused input

Does this issue occur when all extensions are disabled?: Yes

- VS Code Version: 1.131.0
- OS Version: macOS 26.5.2

Steps to Reproduce:

1. Open the Agents window in VS Code.
2. Start a new chat, send a prompt, and wait for a response.
3. Select some text in the assistant reply to show the inline "Ask a question" hover.
4. Type some text into the hover input.
5. Press `Cmd+Delete`.

Expected:
`Cmd+Delete` should apply to the focused inline input (for example, deleting text from the input) and should not trigger a destructive chat action.

Actual:
The text in the hover input remains unchanged, but the most recent prompt/turn in the chat session behind the hover is deleted.

Additional Notes:
This appears to be a focus/keybinding issue in the Agents UI, where `Cmd+Delete` is being handled by the underlying chat session rather than the currently focused inline input.