chore: Global drawers test utils

[georgylobko]

Description

Related links, issue #, if available: n/a

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

❌ Patch coverage is 93.54839% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 97.12%. Comparing base (b9e85f0) to head (8984b9a).

Files with missing lines	Patch %	Lines
src/test-utils/dom/internal/app-layout-drawers.ts	93.54%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4076      +/-   ##
==========================================
- Coverage   97.12%   97.12%   -0.01%     
==========================================
  Files         864      865       +1     
  Lines       25325    25356      +31     
  Branches     9137     9138       +1     
==========================================
+ Hits        24597    24626      +29     
- Misses        722      724       +2     
  Partials        6        6              

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