Function process_menu_actions 

pub fn process_menu_actions(
    project_vfs: &mut Option<Arc<Mutex<ProjectVfs>>>,
    editor_state: &Arc<Mutex<EditorState>>,
    command_history: &Arc<Mutex<CommandHistory>>,
    world: &mut GameWorld,
)

Process every pending menu action queued in EditorState. Drains pending_browse_project_folder and pending_menu_action in turn.