fix: Add filter/sort e2e for incidents page

[skynetigor]

Closes #3819

📑 Description

• Add E2E test for static facets (status, severity, source)
• Add E2E test for custom facet pointing to alert associated with incidents
• Add E2E test for sorting by creation_time
• Add required selectors for elements to obtain easier access to elements from E2E tests

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

ℹ Additional Information

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
keep	⬜️ Ignored (Inspect)	Visit Preview		Mar 23, 2025 8:45am

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 31.12%. Comparing base (d667aaf) to head (520e446).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #4062       +/-   ##
===========================================
- Coverage   47.03%   31.12%   -15.92%     
===========================================
  Files         165       92       -73     
  Lines       16210    10066     -6144     
===========================================
- Hits         7625     3133     -4492     
+ Misses       8585     6933     -1652     

☔ View full report in Codecov by Sentry.
📢 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.

[shahargl]

@skynetigor looks good, just wrap the tests with "try/except" and use save_failure_artifacts on except

[VladimirFilonov]

LGTM