feat: adds test id to side navigation

[orangevolon]

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

All modified and coverable lines are covered by tests ✅

Project coverage is 96.25%. Comparing base (ba58915) to head (73bd00a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2972   +/-   ##
=======================================
  Coverage   96.25%   96.25%           
=======================================
  Files         768      768           
  Lines       21750    21754    +4     
  Branches     7434     7378   -56     
=======================================
+ Hits        20935    20939    +4     
+ Misses        807      762   -45     
- Partials        8       53   +45     

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