Accessibility: Remove title attributes and improve accessibility on the "no-js" Menus screen.

When JavaScript is off, the reorder menu item and Edit menu item links now use `aria-label`
attributes instead of title attributes.

Fixes #35134.
Built from https://develop.svn.wordpress.org/trunk@36016


git-svn-id: https://core.svn.wordpress.org/trunk@35981 1a063a9b-81f0-0310-95a4-ce76da25c4cd