feat(cockpit): render the utility strip's measured layout from the store

The Cockpit layout pass publishes the utility strip's fit to the
gev-cockpit store: the HUD's --cockpit-utility-* lengths, whether only the
expanded control fits, and whether a collapsed control beside an expanded
one is hidden from assistive technology. CockpitView renders the lengths
on the HUD and CockpitUtilityControls the strip's class and each control's
aria-hidden, which now also follows a popover opened between passes. Focus
leaves a control before the strip hides it. Exit publishes no layout,
which also clears the expanded height, class and aria-hidden the old exit
left behind. The briefing and Contact cards' positions stay imperative:
the same pass measures them straight after writing them.

src/ui/applicationShell.js

@@ -400,6 +400,8 @@ export class StyleManager extends ShellFacade {
             useCockpitStore(applicationPinia()).publishVision(view),
           signals: (rows) =>
             useCockpitStore(applicationPinia()).publishSignals(rows),
+          utilityLayout: (layout) =>
+            useCockpitStore(applicationPinia()).publishUtilityLayout(layout),
         },
         _layoutRightPanels: (...args) => this._layoutRightPanels(...args),
         _setCockpitVision: (...args) => this._setCockpitVision(...args),