invitations: Display expiration times in settings > invitations.

Fixes #19680.

static/js/settings_invites.js

@@ -58,11 +58,11 @@ function populate_invites(invites_data) {
     add_invited_as_text(invites_data.invites);
 
     const invites_table = $("#admin_invites_table").expectOne();
-
     ListWidget.create(invites_table, invites_data.invites, {
         name: "admin_invites_list",
         modifier(item) {
             item.invited_absolute_time = timerender.absolute_time(item.invited * 1000);
+            item.expiry_date_absolute_time = timerender.absolute_time(item.expiry_date * 1000);
             item.is_admin = page_params.is_admin;
             item.disable_buttons =
                 item.invited_as === settings_config.user_role_values.owner.code &&

static/templates/settings/admin_invites_list.hbs

@@ -21,6 +21,9 @@
     <td>
         <span class="invited_at">{{invited_absolute_time}}</span>
     </td>
+    <td>
+        <span class="expires_at">{{expiry_date_absolute_time}}</span>
+    </td>
     <td>
         <span>{{invited_as_text}}</span>
     </td>

static/templates/settings/invites_list_admin.hbs

@@ -20,6 +20,7 @@
                 <th data-sort="alphabetic" data-sort-prop="ref">{{t "Invited by" }}</th>
                 {{/if}}
                 <th data-sort="numeric" data-sort-prop="invited">{{t "Invited at" }}</th>
+                <th data-sort="numeric" data-sort-prop="expires_at">{{t "Expires at" }}</th>
                 <th data-sort="numeric" data-sort-prop="invited_as">{{t "Invited as" }}</th>
                 <th class="actions">{{t "Actions" }}</th>
             </thead>