fix: remove windowless glass DOM when animate is false

[ohxyz]

Problem

removeWindowlessGlass(id, { animate: false }) short-circuited:

const detachedGlassEl = detachedGlassManager.removeDetachedGlass(id);
if (!animate) {
  return Promise.resolve(detachedGlassEl);
}

detachedGlassManager.removeDetachedGlass(id) only splices the glass out of the internal tracking array and returns the node — the actual glassEl.remove() (and modal backdrop removal) happens only inside removeDetachedGlassElement. So with animate: false, the glass shell (and any backdrop) was left orphaned on document.body.

This surfaced in react-bwin: when WindowProvider unmounts, its cleanup calls removeWindowlessGlass(id, { animate: false }) for each live glass. React tears down the content portal (inner content disappears) while bwin leaves the empty glass shell on screen.

Fix

Drop the early return and always delegate to removeDetachedGlassElement, which already removes the element + backdrop synchronously when animate is false. This matches the correct sibling removeDetachedGlass in crud.js.

Test plan

• Open a windowless glass, then call removeWindowlessGlass(id, { animate: false }) — glass and any modal backdrop are removed from document.body.
• In react-bwin, unmount the WindowProvider with a windowless glass open — no orphaned glass remains (dev/windowless-glass-unmount.tsx).