Fix MR checkboxes alignment on mobile

What does this MR do?

Fixes the MR checkbox alignment by removing an unneeded class.

Screenshots

• Fixed responsive view 👍

Before (Responsive)	After (Responsive)

• Full view is the same 👍

Before (Full)	After (Full)

Does this MR meet the acceptance criteria?

Conformity

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

Performance and testing

• Tested in all supported browsers

Links

Closes #57037 (closed)