feat(layout): update height calculations for page containers

[RemiBonnet]

Summary

Fix double scroll when organization banners are visible on standard-size screens.

The page container height now accounts for the rendered banner height, and logs/cloud-shell views use the shared page-container sizing instead of hardcoded viewport calculations. This keeps service logs, deployment logs, cluster logs, and terminals to a single intended scroll area on smaller screens

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 0% with 22 lines in your changes missing coverage. Please review.
✅ Project coverage is 38.38%. Comparing base (b976b45) to head (97a5603).

Files with missing lines	Patch %	Lines
...re/src/lib/list-service-logs/list-service-logs.tsx	0.00%	21 Missing ⚠️
.../lib/list-deployment-logs/list-deployment-logs.tsx	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@                Coverage Diff                 @@
##           new-navigation    #2657      +/-   ##
==================================================
- Coverage           45.08%   38.38%   -6.70%     
==================================================
  Files                1135       89    -1046     
  Lines               23841     2845   -20996     
  Branches             6935      931    -6004     
==================================================
- Hits                10748     1092    -9656     
+ Misses              11215     1502    -9713     
+ Partials             1878      251    -1627     

Flag	Coverage Δ
unittests	38.38% <0.00%> (-6.70%)	⬇️

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[rmnbrd]

Looks good to me, well done 👏