Prevent .form-actions element from leaking out of the main container

CHANGELOG

@@ -333,6 +333,7 @@ v 8.10.0
   - Redirects back to issue after clicking login link
   - Eager load award emoji on notes
   - Allow to define manual actions/builds on Pipelines and Environments
+  - Fix leaking of submit buttons outside the width of a main container !18731
   - Fix pagination when sorting by columns with lots of ties (like priority)
   - The Markdown reference parsers now re-use query results to prevent running the same queries multiple times. !5020
   - Updated project header design

app/assets/stylesheets/framework/forms.scss

@@ -19,7 +19,6 @@ input[type='text'].danger {
 }
 
 .form-actions {
-  margin: -$gl-padding;
   margin-top: 0;
   margin-bottom: -$gl-padding;
   padding: $gl-padding;