agent_ui: Remove dead link in agent menu (#59232)

The link 404s for me on all channels, thus removing it and the context
menu entry here.

Release Notes:

- Removed a dead link in the agent menu.
1e017d04b9Finn Evers committed on 6/13/2026, 1:00:44 PM· committed by GitHubparent8589cbb
2 files changedLine totals unavailable