feat: Tag agents in a private note (#1688)

Co-authored-by: Sojan <sojan@pepalo.com>

app/javascript/dashboard/components/widgets/WootWriter/ReplyBottomPanel.vue

@@ -22,7 +22,7 @@
         </file-upload>
       </button>
       <button
-        v-if="enableRichEditor"
+        v-if="enableRichEditor && !isOnPrivateNote"
         class="button clear button--emoji"
         :title="$t('CONVERSATION.REPLYBOX.TIP_FORMAT_ICON')"
         @click="toggleFormatMode"
@@ -102,6 +102,10 @@ export default {
       type: Boolean,
       default: false,
     },
+    isOnPrivateNote: {
+      type: Boolean,
+      default: false,
+    },
     enableRichEditor: {
       type: Boolean,
       default: false,