fix: Auto close drop-down divs on lost focus (reapply)#9213

BenHenning merged 2 commits intoRaspberryPiFoundation:developRaspberryPiFoundation/blockly:developfrom

BenHenning:auto-close-drop-down-divs-on-lost-focus-attempt-v2BenHenning/blockly:auto-close-drop-down-divs-on-lost-focus-attempt-v2Copy head branch name to clipboard