Fix flaky Cycle Analytics test case

What does this MR do?

Use has_selector matcher (it has built in wait) to look up class changes after clicking on the button.

Screenshots

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

Closes #32299 (closed)