[IMP] mail: guard WelcomeViewComponent

Task-2797754

closes odoo/odoo#86953

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

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

@@ -2,8 +2,8 @@
 <templates xml:space="preserve">
 
     <t t-name="mail.WelcomeView" owl="1">
-        <div class="o_WelcomeView h-100 d-flex flex-column justify-content-center align-items-center bg-light" t-attf-class="{{ className }}" t-ref="root">
-            <t t-if="welcomeView">
+        <t t-if="welcomeView">
+            <div class="o_WelcomeView h-100 d-flex flex-column justify-content-center align-items-center bg-light" t-attf-class="{{ className }}" t-ref="root">
                 <h1 class="font-weight-light">
                     <span t-if="welcomeView.mediaPreview">You've been invited to a meeting!</span>
                     <span t-if="!welcomeView.mediaPreview">You've been invited to a chat!</span>
@@ -22,8 +22,8 @@
                         <button class="o_WelcomeView_joinButton btn btn-success btn-lg align-self-end p-0 rounded-circle shadow fa fa-phone" title="Join Channel" t-att-disabled="welcomeView.isJoinButtonDisabled" t-on-click="welcomeView.onClickJoinButton"/>
                     </div>
                 </div>
-            </t>
-        </div>
+            </div>
+        </t>
     </t>
 
 </templates>