Fix command menu focus (#16264)

CommandMenu did not push its own focus item to the focus stack when
focused. (See NavigationDrawerInput)

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/command-menu/constants/CommandMenuSearchInputFocusId.ts

@@ -0,0 +1 @@
+export const COMMAND_MENU_SEARCH_INPUT_FOCUS_ID = 'command-menu-search-input';