docs(js): Add tunneling to existing quick start guides

[inventarSarah]

DESCRIBE YOUR PR

Added a step on tunneling to our existing (relevant) quick start guides:

• Angular (manual, wizard)
• React (manual)
• Nuxt (manual, wizard)
• Svelte (manual)
• Sveltekit (manual, wizard)

Closes: #13713

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• Urgent deadline (GA date, etc.):
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SLA

• Teamwork makes the dream work, so please add a reviewer to your PRs.
• Please give the docs team up to 1 week to review your PR unless you've added an urgent due date to it.
  Thanks in advance for your help!

PRE-MERGE CHECKLIST

Make sure you've checked the following before merging your changes:

• Checked Vercel preview for correctness, including links
• PR was reviewed and approved by any necessary SMEs (subject matter experts)
• PR was reviewed and approved by a member of the Sentry docs team

EXTRA RESOURCES

• Sentry Docs contributor guide

[vercel]

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

Name	Status	Preview	Comments	Updated (UTC)
sentry-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 22, 2025 11:37am

2 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
changelog	⬜️ Ignored (Inspect)			May 22, 2025 11:37am
develop-docs	⬜️ Ignored (Inspect)			May 22, 2025 11:37am

[codecov]

Bundle Report

Changes will increase total bundle size by 453 bytes (0.0%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
sentry-docs-server-cjs	11.2MB	459 bytes (0.0%) ⬆️
sentry-docs-client-array-push	9.51MB	-6 bytes (-0.0%) ⬇️

Affected Assets, Files, and Routes:

view changes for bundle: sentry-docs-client-array-push

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
static/chunks/pages/_app-*.js	-3 bytes	868.7kB	-0.0%
static/chunks/8165-*.js	-3 bytes	410.1kB	-0.0%
static/TByMq9NvdYB-*.js (New)	578 bytes	578 bytes	100.0% 🚀
static/TByMq9NvdYB-*.js (New)	77 bytes	77 bytes	100.0% 🚀
static/ZlqCzUQsxqrW9fkiaBkWv/_buildManifest.js (Deleted)	-578 bytes	0 bytes	-100.0% 🗑️
static/ZlqCzUQsxqrW9fkiaBkWv/_ssgManifest.js (Deleted)	-77 bytes	0 bytes	-100.0% 🗑️

view changes for bundle: sentry-docs-server-cjs

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
1729.js	-3 bytes	1.75MB	-0.0%
../instrumentation.js	-3 bytes	1.08MB	-0.0%
9523.js	-3 bytes	1.05MB	-0.0%
../app/[[...path]]/page.js.nft.json	156 bytes	398.29kB	0.04%
../app/platform-redirect/page.js.nft.json	156 bytes	398.21kB	0.04%
../app/sitemap.xml/route.js.nft.json	156 bytes	396.18kB	0.04%