Limit snippet search count

What does this MR do?

Limits the search count query for snippets. Instead of showing the complete number of snippets in the database, the UI will display a text like 100+ indicating that there are more records.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Separation of EE specific content

Closes #32643 (closed)