gpui: Add action_schema_by_name for O(1) action schema lookup (#47180)

Release Notes:

- N/A


Avoids iterating through all registered actions when looking up a single
action's schema in json_schema_store.

---------

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>
95cf4ab3f2Xiaobo Liu committed on 1/26/2026, 8:25:18 AM· committed by GitHubparent7af276a
3 files changedLine totals unavailable