changed reaction images to use specific temp images

src/lib/components/reaction-quote.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-    // currently available reactions: pointing, joy, quote
+    // currently available reactions: pointing, joy, quote, warn
     let {
         reaction,
         text,
@@ -16,6 +16,8 @@
                 return "";
             case "pointing":
                 return "";
+            case "warn":
+                return "";
             default:
                 return "reaction image missing";
         }