feat(obs): add http metric for for envoy

[pggb25]

Summary

This PR add the support for Envoy in the HTTP graph.
You can check it here
you have the both mode enabled. first envoy then nginx

Issue:

Screenshots / Recordings

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

[RemiBonnet]

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[codecov]

Codecov Report

❌ Patch coverage is 13.42282% with 129 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.27%. Comparing base (8219801) to head (503fccd).
⚠️ Report is 2 commits behind head on staging.

Files with missing lines	Patch %	Lines
...-duration-chart/network-request-duration-chart.tsx	0.00%	42 Missing ⚠️
...uest-status-chart/network-request-status-chart.tsx	0.00%	33 Missing ⚠️
...-request-size-chart/network-request-size-chart.tsx	0.00%	27 Missing ⚠️
...e-http-errors-chart/instance-http-errors-chart.tsx	0.00%	18 Missing ⚠️
...b/hooks/use-http-route-name/use-http-route-name.ts	0.00%	3 Missing ⚠️
...ib/service/service-dashboard/service-dashboard.tsx	0.00%	2 Missing ⚠️
.../feature/src/lib/util-filter/dashboard-context.tsx	50.00%	1 Missing and 1 partial ⚠️
...y/feature/src/lib/hooks/use-metrics/use-metrics.ts	0.00%	1 Missing ⚠️
libs/shared/ui/src/lib/components/chart/chart.tsx	0.00%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (8219801) and HEAD (503fccd). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (8219801)	HEAD (503fccd)
unittests	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##           staging    #2361      +/-   ##
===========================================
- Coverage    52.38%   47.27%   -5.11%     
===========================================
  Files          381     1222     +841     
  Lines         7949    22534   +14585     
  Branches      2432     6672    +4240     
===========================================
+ Hits          4164    10654    +6490     
- Misses        3008     9865    +6857     
- Partials       777     2015    +1238     

Flag	Coverage Δ
unittests	47.27% <13.42%> (-5.11%)	⬇️

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