fix(street-level): IC8 follow-ups for Google Street View

- An open after a failed one is no longer failed by the old panorama's
  status: only status_changed can reject; position_changed only resolves.
- A nearest lookup aborted, timed out or refused while Google's script
  loads no longer sends its getPanorama request once the script arrives.
- A panorama-details lookup that never answers times out after 10 s,
  cools down and retries; an unmount releases lookups in flight, and
  their late answers are dropped.
- Every Maps loader on a page shares one script load and ready callback,
  and either can retry a failed script.
- OPEN STREET VIEW aimed at the sky opens nothing and says to aim at a
  street, instead of looking up the camera footprint.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/layers/streetLevel/providers/google/index.js

@@ -155,9 +155,13 @@ export function createGoogleProvider({
           signal?.throwIfAborted();
           const filter = context.getFilter();
           if (filter.pano === 'flat') return null;
+          // Set once the caller has its answer (aborted, timed out, refused):
+          // a lookup still waiting on Google's script then asks nothing.
+          let settled = false;
           const lookup = (async () => {
             const lib = await loader.importLibrary('streetView');
             await getService();
+            if (settled) return null;
             const { GOOGLE, OUTDOOR } = lib.StreetViewSource;
             try {
               const { data } = await service.getPanorama({
@@ -177,6 +181,8 @@ export function createGoogleProvider({
             ms: NEAREST_TIMEOUT_MS,
             signal,
             loader,
+          }).finally(() => {
+            settled = true;
           });
           const panoId = data?.location?.pano;
           if (!panoId) return null;