Tighten the render failure notice's error handling and focus

- An error a frame of the inline panel's timer throws no longer reaches the
  host page; it has been raised as a render error by then.
- An error Scene raised and threw on (rethrowRenderErrors) is raised once.
- After a lost context, later render errors are only logged, so the notice
  keeps saying why.
- A render error without a value shows no detail.
- The globe's tile load progress and the scene's tileset load events are
  finished too when a listener's error cuts them short.
- Focus goes back where it was when the globe draws again, or to the map.
- The appearance counter and the guard for a missing viewer are gone.

Tests cover every finished event, a thrown timer frame, a single report under
rethrowRenderErrors and the focus return; the inline tests share one setup.

scripts/format-scope.json

@@ -561,7 +561,6 @@
   "src/ui/renderFailureEventRetry.test.mjs",
   "src/app/renderFailureInlineRetry.test.mjs",
   "src/ui/renderFailureSecondLoop.test.mjs",
-  "src/app/renderFailureInlineSecondLoop.test.mjs",
   "src/layers/cctv/lifecycle.js",
   "src/layers/cctv/controls.js",
   "src/layers/cctv/geometry.js",