refactor: keep the title-only label uniform across search modes

apps/client/public/locales/en-US/translation.json

@@ -1309,6 +1309,5 @@
   "Read-only mode": "Read-only mode",
   "AI Chat can search and read workspace content, but cannot create or edit pages.": "AI Chat can search and read workspace content, but cannot create or edit pages.",
   "Toggle AI Chat read-only mode": "Toggle AI Chat read-only mode",
-  "Title only": "Title only",
-  "File name only": "File name only"
+  "Title only": "Title only"
 }

apps/client/src/features/search/components/search-spotlight-filters.tsx

@@ -270,9 +270,7 @@ export function SearchSpotlightFilters({
           aria-pressed={titleOnly}
           onClick={() => setTitleOnly(!titleOnly)}
         >
-          {contentType === "attachment"
-            ? t("File name only")
-            : t("Title only")}
+          {t("Title only")}
         </Button>
       )}