chore: Add extra tests on tools/drawer alias behavior

[just-boris]

Description

Ensure findTools and findActiveDrawer test utils always work as expected

Related links, issue #, if available: AWSUI-59987

How has this been tested?

Test only change

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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[just-boris]

It is all themes by default, so we can remove this array

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.34%. Comparing base (c59e8fd) to head (182d406).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3052   +/-   ##
=======================================
  Coverage   96.34%   96.34%           
=======================================
  Files         780      780           
  Lines       21921    21921           
  Branches     7097     7097           
=======================================
  Hits        21119    21119           
  Misses        795      795           
  Partials        7        7           

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