fix: avoid changing url when removing filters (#1530)

* Makes the Active Tab Key independent from the URL, except for the initial load, where the active tab is set from the url.
*Avoids unnecessarily changing SearchParams: Due to a limitation of the useSearchParams react hook, which uses a memoized value for the URL that becomes stale after selecting a tab, it unexpectedly changes the URL value. Unfortunately there's no way to completely avoid this, so if there's a usageKey url param, the hook setter function will be called and the URL will revert to the stale memoized url.

src/library-authoring/LibraryAuthoringPage.tsx

@@ -148,7 +148,7 @@ const LibraryAuthoringPage = ({ returnToLibrarySelection }: LibraryAuthoringPage
     } else if (currentPath && currentPath in ContentType) {
       setActiveKey(ContentType[currentPath]);
     }
-  }, [location.pathname]);
+  }, []);
 
   useEffect(() => {
     if (!componentPickerMode) {

src/search-manager/SearchManager.ts

@@ -147,7 +147,9 @@ export const SearchContextProvider: React.FC<{
     setBlockTypesFilter([]);
     setTagsFilter([]);
     setProblemTypesFilter([]);
-    setUsageKey('');
+    if (usageKey !== '') {
+      setUsageKey('');
+    }
   }, []);
 
   // Initialize a connection to Meilisearch: