Fix updates dialog on Android by portaling above Settings and resolving Capacitor asset URLs.

src/app/components/updates-dialog/UpdatesDialog.css.ts

@@ -3,7 +3,13 @@ import { color, config, toRem } from 'folds';
 
 const MOBILE_BREAKPOINT = '480px';
 
-/** Dialog height cap — 85% of the viewport, minus safe areas. */
+export const PortalLayer = style({
+  position: 'fixed',
+  inset: 0,
+  zIndex: config.zIndex.Max,
+});
+
+/** Dialog + overlay padding must never exceed the viewport height. */
 const DIALOG_MAX_HEIGHT =
   'calc(85vh - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px))';