chore: Add visual regression test for alert runtime-action

[jperals]

Description

Test that was in the internal tests but missing in the test definitions here. Add it here so that we can remove it there.

Related: CR-287229314

How has this been tested?

The respective results were added to the Allure report (also linked below under Deployments): https://d21d5uik3ws71m.cloudfront.net/components/6f49734547f8484a19401d6a7e79b399cf5e7688/allure-report/index.html

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?

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.57%. Comparing base (45502c0) to head (6f49734).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4701   +/-   ##
=======================================
  Coverage   97.57%   97.57%           
=======================================
  Files         948      948           
  Lines       30507    30507           
  Branches    11164    11164           
=======================================
  Hits        29767    29767           
  Misses        693      693           
  Partials       47       47           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.