Merge branch 'fix-dropdown-top-navbar-position-mobile' into 'master'

Fix dropdown position for the new button on mobile for the top navbar

Closes #34139

See merge request !12388

app/assets/stylesheets/framework/dropdowns.scss

@@ -395,6 +395,11 @@
 .dropdown-menu-align-right {
   left: auto;
   right: 0;
+  margin-top: -5px;
+
+  @media (max-width: $screen-xs-max) {
+    left: 0;
+  }
 }
 
 .dropdown-menu-selectable {

app/assets/stylesheets/framework/header.scss

@@ -346,6 +346,7 @@ header {
     width: auto;
     min-width: 140px;
     margin-top: -5px;
+    left: auto;
 
     .current-user {
       padding: 5px 18px;