Fix emoji picker popup is not always fully visible

What does this MR do?

Fixes emoji picker visibility issue.

This data-position attribute was deleted with this commit. Looks like we need it so I added it back.

Before	After

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

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers

Fixes #60987 (closed)