test: Re-enabled mixed chart hover test

[pan-kot]

Description

Re-enabling test that was skipped after migration to webdriver v9.

Rel: AWSUI-60146

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.42%. Comparing base (20e6a83) to head (a992dab).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #3306    +/-   ##
========================================
  Coverage   96.42%   96.42%            
========================================
  Files         791      791            
  Lines       22603    22603            
  Branches     7396     7814   +418     
========================================
  Hits        21795    21795            
+ Misses        801      754    -47     
- Partials        7       54    +47     

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