sidebar: Switch with `ctrl-tab` (#52423)

Overrides `ctrl-tab` when the sidebar/agent panel is focused to switch
between recently viewed threads

Release Notes:

- N/A or Added/Fixed/Improved ...
d72a03827dCameron Mcloughlin committed on 3/28/2026, 5:48:34 PM· committed by GitHubparent54a95e7
11 files changedLine totals unavailable