Merge branch '22632-fix-project-explore-dropdown-alignment' into 'master'

Right-align dropdown menus to prevent horizontal page overflow

Added `dropdown-menu-align-right` class to a few dropdown menus in the Projects -> Explore -> All page to prevent overflow.

Closes #22632

See merge request !6600

app/views/explore/projects/_filter.html.haml

@@ -8,7 +8,7 @@
       - else
         Any
       %b.caret
-    %ul.dropdown-menu
+    %ul.dropdown-menu.dropdown-menu-align-right
       %li
         = link_to filter_projects_path(visibility_level: nil) do
           Any
@@ -28,7 +28,7 @@
       - else
         Any
       %b.caret
-    %ul.dropdown-menu
+    %ul.dropdown-menu.dropdown-menu-align-right
       %li
         = link_to filter_projects_path(tag: nil) do
           Any