Changes:
- Use ElementInternals for aria roles outside of Firefox
- Don't export Tabs interface used by tab
- Get parent tabs element with closest() rather than
- Remove md-tabs delegate focus (not used)
- Remove selectedAttribute property (always 'selected')
- Made focusedItem private
PiperOrigin-RevId: 561287221
BREAKING CHANGE: remove `variant` attributes and change `md-tab` to `md-primary-tab`, or `md-secondary-tab` if using `variant="secondary"
PiperOrigin-RevId: 561077231
BREAKING CHANGE: tabs cannot be disabled per spec. If disabled tabs are required, use `pointer-events: none` and CSS to style them.
PiperOrigin-RevId: 560124706
BREAKING CHANGE: Rename `@material/web/<component>/lib` to `@material/web/<component>/internal`. Prefer not using internal files.
PiperOrigin-RevId: 550633216