feat(ui): render the ORBIT indicator from the location tray

LocationControls offers the indicator with showOrbit(active) in its
presented tray instead of building it on the body, and the scene chrome
teleports it there. Orbit toggles, including the voice switch, light it
through the controls.

src/cameraGlobeRotation.test.mjs

@@ -831,10 +831,37 @@ test('orbit-toggle controller stops globe motion before toggling', async (t) =>
         return true;
       },
     },
-    _orbitIndicator: { classList: { toggle() {} } },
+    _locationControls: { showOrbit() {} },
   });
   assert.equal(toggled, true);
 });
+test('the voice orbit switch lights and clears the ORBIT indicator', async () => {
+  const { LocationNavigation } = await import('./ui/locationNavigation.js');
+  const shown = [];
+  let active = false;
+  const nav = Object.assign(Object.create(LocationNavigation.prototype), {
+    services: {},
+    _currentTarget: {},
+    _currentPoi: {},
+    orbitController: {
+      get active() {
+        return active;
+      },
+      toggle() {
+        active = !active;
+        return active;
+      },
+      stop() {
+        active = false;
+      },
+    },
+    _locationControls: { showOrbit: (value) => shown.push(value) },
+  });
+  assert.deepEqual(nav.setOrbit(true), { ok: true, orbiting: true });
+  assert.deepEqual(nav.setOrbit(true), { ok: true, orbiting: true });
+  assert.deepEqual(nav.setOrbit(false), { ok: true, orbiting: false });
+  assert.deepEqual(shown, [true, false]);
+});
 for (const owner of ['tracking', 'cockpit', 'close-up'])
   test(`actual voice runner refuses ${owner} without releasing or repositioning`, async (t) => {
     const { createGevActionRunner } = await import('./voice/gevActions.js');