feature: add an "interject" response option to the "ask" permission's modal (implements #4822)

[ariane-emory]

Closes #4822.

This PR adds a new fourth response option to the options presented in the modal dialog produced by the "ask" permission in the TUI: "interject" ("i" key).

When the user hits the "i" key to select the "interject" option, they're prompted to enter their advice for how the model should proceed.

If the user hits enter after entering their advice, the user's interjection is formatted into the error message received by the model, after which it continues processing.

If the user instead hits escape, it behaves as if they'd denied the tool cool.

Step 1: display the option to interject

Step 2: allow the user to enter their interjection/advice

Step 3: model receives the user's advice and continues

[ariane-emory]

Temporarily re-drafting to resolve newly introduced API conflict, likely will have time sort that out that tomorrow.

[ariane-emory]

Sorted, un-drafting.

[ariane-emory]

Corrupted by a bad merge, will fix.

[ariane-emory]

Investigated, was not actually corrupted.