[IMP] mail: guard FollowerListMenuComponent

Task-2797754

closes odoo/odoo#86822

Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

addons/mail/static/src/components/follower_list_menu/follower_list_menu.xml

@@ -2,8 +2,8 @@
 <templates xml:space="preserve">
 
     <t t-name="mail.FollowerListMenu" owl="1">
-        <div class="o_FollowerListMenu" t-attf-class="{{ className }}" t-on-keydown="_onKeydown" t-ref="root">
-            <t t-if="thread">
+        <t t-if="thread">
+            <div class="o_FollowerListMenu" t-attf-class="{{ className }}" t-on-keydown="_onKeydown" t-ref="root">
                 <div class="o_FollowerListMenu_followers" t-ref="dropdown">
                     <button class="o_FollowerListMenu_buttonFollowers btn btn-link" t-att-disabled="props.isDisabled" t-on-click="_onClickFollowersButton" title="Show Followers">
                         <i class="fa fa-user"/>
@@ -30,8 +30,8 @@
                         </div>
                     </t>
                 </div>
-            </t>
-        </div>
+            </div>
+        </t>
     </t>
 
 </templates>