Giving a closing standard sheet its room back made the root's inline
size a transition, with an `@starting-style` for the entry, so a sheet
that starts open grew in on every page load: its open state arrives
through Alpine, after the first paint of the closed root. Nothing should
move while a page loads.
The view now marks the root `data-md-drawer-settled` two frames after
the first `settle()` — once the state Alpine starts with has been
painted — and drawer.css gives the standard sheet's root and sheet no
transitions until then. The browser test loads a page with slowed motion
tokens and a sheet that starts open, and finds it standing at its full
width, shown, with nothing animating; closing it afterwards still
animates. It fails without the change in Chrome and Firefox and passes
in all three engines.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
