lots of hard coded stuff to enable our tests. Cleaning this up for generalized client usage.
BREAKING CHANGE: menu harnesses will not automatically open menus in quick mode anymore and interactions in menu and list harnesses will not automatically go to the first item but rather the menu roots.
PiperOrigin-RevId: 561746073
BREAKING CHANGE: Rename `@material/web/<component>/lib` to `@material/web/<component>/internal`. Prefer not using internal files.
PiperOrigin-RevId: 550633216