fix(web): search bar deactivates when focus exits (#17549)

* fix(web): search bar deactivates when focus exits

* fix: disable search bar on destroy

For example, on the search page. If the escape key is pressed while the advanced filters button is focused, the search page will close but the search bar will remain activated.

web/src/lib/stores/search.svelte.ts

@@ -1,12 +1,10 @@
 class SearchStore {
   savedSearchTerms = $state<string[]>([]);
   isSearchEnabled = $state(false);
-  preventRaceConditionSearchBar = $state(false);
 
   clearCache() {
     this.savedSearchTerms = [];
     this.isSearchEnabled = false;
-    this.preventRaceConditionSearchBar = false;
   }
 }