title: KivyMD Toolbar left_action_items can't switch screens?
body: <p>I am new to KivyMD and presently working on MDToolbar. I learned to add left_action_items onto the toolbar. But my question is how to use those action_items to change screens, ie when I click those action_items it should go to a different screen, that's what they are used for right(change screens). I checked dozens of solutions on the internet including StackOverflow, but none of them helped me. Can someone help me rectify this issue.....</p>