feat(announcement-banner): support multiple banners with carousel nav…

[jul-dan]

This PR introduces support for displaying multiple banners in the product instead of being limited to a single banner at a time.

Changes Included:

• Updated the PostHog banner payload structure to accept multiple banners.
• Added frontend support for rendering multiple banners in a carousel.
• Implemented banner prioritization order:
  • Error
  • Warning
  • Info
• Updated local storage logic to manage dismissal state individually for each banner.
• Added conditional carousel behavior:
  • If multiple banners are present, they are displayed in the carousel.
  • If only one banner is present, it is displayed as a standard standalone banner without carousel navigation

Summary

Issue: QOV-1822

Screenshots / Recordings

Before	After

Testing

• Changes tested locally in the relevant Console's pages and Storybooks
• yarn test or yarn test -u (if you need to regenerate snapshots)
• yarn format
• yarn lint

PR Checklist

• I followed naming, styling, and TypeScript rules (see .cursor/rules)
• I performed a self-review (diff inspected, dead code removed)
• I titled the PR using Conventional Commits with a scope when possible (e.g. feat(service): add new Terraform service) - required for semantic-release
• I only kept necessary comments, written in English (watch for useless AI comments)
• I involved a designer to validate UI changes if I am not a designer
• I covered new business logic with tests (unit)
• I confirmed CI is green (Codecov red can be accepted)
• I reviewed and executed locally any AI-assisted code

[codecov]

Codecov Report

❌ Patch coverage is 86.84211% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.31%. Comparing base (9aaab7e) to head (bfcdf07).
⚠️ Report is 1 commits behind head on staging.

Files with missing lines	Patch %	Lines
...rc/lib/announcement-banner/announcement-banner.tsx	79.16%	4 Missing and 6 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           staging    #2587      +/-   ##
===========================================
- Coverage    47.67%   47.31%   -0.37%     
===========================================
  Files         1281     1233      -48     
  Lines        23858    23348     -510     
  Branches      7053     6956      -97     
===========================================
- Hits         11374    11046     -328     
+ Misses       10324    10213     -111     
+ Partials      2160     2089      -71     

Flag	Coverage Δ
unittests	47.31% <86.84%> (-0.37%)	⬇️

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[RemiBonnet]

🎉 This PR is included in version 1.301.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀