macOS word-delete keyboard shortcuts are not supported in prompt input

[YahIsKing]

Issue:

The prompt input currently does not seem to support standard macOS keyboard shortcuts for deleting words. This is something I use frequently when editing prompts, and I confirmed the behavior across multiple terminal apps, so it does not appear to be terminal-specific.

Repro:
1. Open the app on macOS
2. Start typing a prompt
3. Try using standard macOS word-deletion shortcuts
4. Observe that the expected word-delete behavior does not occur

Expected:
macOS-native word-deletion shortcuts should edit the prompt text as expected.

Actual:
The shortcuts are not recognized or do not perform word deletion.

Impact:
This makes prompt editing slower and less ergonomic for macOS users, especially when making quick revisions.

[OverHash]

Contributors: see fcaa45b. Maybe it is helpful!