assistant: Add missing toggle model selector action handler (#25248)

#25032 removes handling of `ToggleModelSelector` action. This PR adds
missing handler to context editor.

Release Notes:

- N/A
43f2e4c476Askar committed on 2/20/2025, 11:59:27 AM· committed by GitHubparent48541fb
1 file changedLine totals unavailable