Fix UI breaking on forms on Bootstrap Grid system

What does this MR do?

Fixes UI-breaking forms on Bootstrap Grid system for EE-specific content of gitlab-ce#57189 (gitlab-ce!24885)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [n/a] Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [n/a] Database guides
• Separation of EE specific content

Closes #12658 (closed)