feat: add availableSince for a reusable availability check

[JPeer264]

DESCRIBE YOUR PR

This introduces a reusable component we can use to introduce new features and indicate which version introduces it. The availableSince component can be reused and we can then adapt the style once there if necessary.

Preview:

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PRE-MERGE CHECKLIST

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• Checked Vercel preview for correctness, including links
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• PR was reviewed and approved by a member of the Sentry docs team

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Project	Deployment	Preview	Comments	Updated (UTC)
develop-docs	Error			Nov 3, 2025 0:17am
sentry-docs	Error			Nov 3, 2025 0:17am

[JPeer264]

note: The info of @SentryCon or which SDK is actually not needed as the context of the page should indicate that already

[codecov]

Bundle Report

Changes will increase total bundle size by 930 bytes (0.0%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
sentry-docs-client-array-push	10.16MB	-6 bytes (-0.0%) ⬇️
sentry-docs-server-cjs	12.84MB	936 bytes (0.01%) ⬆️

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	882.71kB	-0.0%
static/chunks/8321-*.js	-3 bytes	425.87kB	-0.0%
static/JywvKZ_UZcuG-*.js (New)	77 bytes	77 bytes	100.0% 🚀
static/JywvKZ_UZcuG-*.js (New)	684 bytes	684 bytes	100.0% 🚀
static/N7GCSB-*.js (Deleted)	-77 bytes	0 bytes	-100.0% 🗑️
static/N7GCSB-*.js (Deleted)	-684 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	1.74MB	-0.0%
../instrumentation.js	-3 bytes	1.07MB	-0.0%
9523.js	-3 bytes	1.04MB	-0.0%
../app/[[...path]]/page.js.nft.json	224 bytes	846.98kB	0.03%
../app/platform-redirect/page.js.nft.json	224 bytes	846.9kB	0.03%
../app/sitemap.xml/route.js.nft.json	224 bytes	844.13kB	0.03%
../app/[[...path]]/page.js	273 bytes	615.91kB	0.04%

Files in ../app/[[...path]]/page.js:

• ./src/components/sdkOption.tsx → Total Size: 4.78kB

• ./src/components/sdkApi.tsx → Total Size: 6.74kB

• ./src/mdxComponents.ts → Total Size: 4.22kB

• ./src/components/availableSince.tsx → Total Size: 765 bytes

App Routes Affected:

App Route	Size Change	Total Size	Change (%)
/[[...path]]	273 bytes	3.36MB	0.01%

[Lms24]

Nice! Would also wait for a 👍 from @sergical but LGTM!

[logaretm]

Let's gooo, build is failing tho.