docs(sonarqube): sync template standards updates

[mberlofa]

Summary

• Document networkPolicy.egress.extraEgress and extraManifests for SonarQube.
• Add SonarQube playground allowlist coverage and NetworkPolicy extra egress controls.
• Keep the chart docs aligned with the template standards update in fix(sonarqube): align template standards charts#685.

Related

• Syncs with fix(sonarqube): align template standards charts#685.
• Issue: fix: align 81 charts with template standards charts#633.

Validation

• npm run lint
• npm run format:check
• npm run build
• make site-sync-check CHART=sonarqube
• make release-check REPO=site
• make attribution-check REPO=site

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR adds a Network Policy egress configuration section to the sonarqube playground config, registers the sonarqube chart in the playground site-sync lookup, and updates the sonarqube chart documentation to describe the new networkPolicy.egress.extraEgress and extraManifests capabilities.

Changes

SonarQube egress/extraManifests support

Layer / File(s)	Summary
Playground network policy config and registration src/data/playground-configs.ts, src/pages/playground.astro	Adds a gated Network Policy section with extra egress CIDR/port fields to the sonarqube playground config and registers sonarqube in siteSyncPlaygroundConfigs.
Documentation for extraEgress and extraManifests src/pages/docs/charts/sonarqube.mdx	Adds a Key Features bullet, extends the production NetworkPolicy example with extraEgress, adds an Extension Manifests section, and expands the Values table with networkPolicy.egress.extraEgress and extraManifests.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• helmforgedev/site#322: Both PRs add a chart slug to the siteSyncPlaygroundConfigs mapping in src/pages/playground.astro.
• helmforgedev/site#330: Both PRs update the same siteSyncPlaygroundConfigs registry with new chart slugs pointing to src/data/playground-configs.ts.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title is concise and accurately reflects the SonarQube docs sync with template standards updates.
Description check	✅ Passed	The description covers summary, related issue, and validation, but it omits the template's explicit Quality Gates checklist.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/sonarqube-template-standards-sync

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