Potential fix for flaky cycle analytics spec

What does this MR do and why?

ee/spec/features/groups/analytics/cycle_analytics/filters_and_data_spec.rb may be failing because the "Tasks by type" header may just be out of view or obscured by another element that prevents the hover from working.

To improve this, we should move the mouse of the way then perform the hover.

Relates to #380884 (closed)

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