Accessibility: Require Alt key for arrow navigation in theme and media modals#11560

Sukhendu2002 wants to merge 2 commits intoWordPress:trunkWordPress/wordpress-develop:trunkfrom

Sukhendu2002:fix/63760-arrow-key-screen-reader-modal-navigationSukhendu2002/wordpress-develop:fix/63760-arrow-key-screen-reader-modal-navigationCopy head branch name to clipboard