Add message telling FTS is disabled when no toot can be found because of this (#11112)

* Add message telling FTS is disabled when no toot can be found because of this

Fixes #11082

* Remove info icon and reword message

app/javascript/styles/mastodon/components.scss

@@ -3996,6 +3996,11 @@ a.status-card.compact:hover {
   }
 }
 
+.search-results__info {
+  padding: 10px;
+  color: $secondary-text-color;
+}
+
 .modal-root {
   position: relative;
   transition: opacity 0.3s linear;