Specifying the correct operator context (`INVOKE_REGION_CHANNELS` in this case) is mandatory, otherwise looking up the shortcut in `wm_keymap_item_find_props` will fetch the wrong region (`RGN_TYPE_WINDOW` not `RGN_TYPE_CHANNELS`) and thus wont find the keymap item in that region keymap. This was already done for the other menus, not for the context menu though. Pull Request: https://projects.blender.org/blender/blender/pulls/111376