Merge pull request #21113 from overleaf/mf-gallery-header-text-align-center

Center text for gallery-title, this is useful mainly for mobile view

GitOrigin-RevId: 49db14c627125d2c1e1d1f69173ac918d51f4f91

services/web/frontend/stylesheets/bootstrap-5/pages/templates-v2.scss

@@ -58,6 +58,7 @@
     align-items: center;
     justify-content: center;
     margin-bottom: var(--spacing-06);
+    text-align: center;
   }
 
   .gallery-summary {