feat: timeline performance (#16446)

* Squash - feature complete

* remove need to init assetstore

* More optimizations. No need to init. Fix tests

* lint

* add missing selector for e2e

* e2e selectors again

* Update: fully reactive store, some transitions, bugfixes

* merge fallout

* Test fallout

* safari quirk

* security

* lint

* lint

* Bug fixes

* lint/format

* accidental commit

* lock

* null check, more throttle

* revert long duration

* Fix intersection bounds

* Fix bugs in intersection calculation

* lint, tweak scrubber ui a tiny bit

* bugfix - deselecting asset doesnt work

* fix not loading bucket, scroll off-by-1 error, jsdoc, naming

web/src/routes/(user)/favorites/[[photos=photos]]/[[assetId=id]]/+page.svelte

@@ -29,7 +29,10 @@
 
   let { data }: Props = $props();
 
-  const assetStore = new AssetStore({ isFavorite: true });
+  const assetStore = new AssetStore();
+  void assetStore.updateOptions({ isFavorite: true });
+  onDestroy(() => assetStore.destroy());
+
   const assetInteraction = new AssetInteraction();
 
   const handleEscape = () => {
@@ -38,10 +41,6 @@
       return;
     }
   };
-
-  onDestroy(() => {
-    assetStore.destroy();
-  });
 </script>
 
 <!-- Multiselection mode app bar -->