Use tracked object instead of event language in docs and UI (#13685)

* Verbiage update: use tracked object instead of event

* tweaks

web/src/views/search/SearchView.tsx

@@ -116,7 +116,7 @@ export default function SearchView({
           >
             <Input
               className="text-md w-full bg-muted pr-10"
-              placeholder={"Search for a detected object..."}
+              placeholder={"Search for a tracked object..."}
               value={search}
               onChange={(e) => setSearch(e.target.value)}
             />
@@ -145,7 +145,7 @@ export default function SearchView({
         {searchTerm.length > 0 && searchResults?.length == 0 && (
           <div className="absolute left-1/2 top-1/2 flex -translate-x-1/2 -translate-y-1/2 flex-col items-center justify-center text-center">
             <LuSearchX className="size-16" />
-            No Detected Objects Found
+            No Tracked Objects Found
           </div>
         )}