fix(native): update trace boundary documentation

[JoshuaMoelans]

DESCRIBE YOUR PR

Related to the changes in https://github.com/getsentry/sentry-native/pull/1270/files ; transactions once again create a trace boundary, so this should be reflected in the docs.

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• Checked Vercel preview for correctness, including links
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Name	Status	Preview	Comments	Updated (UTC)
sentry-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 7, 2025 11:09am

1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
develop-docs	⬜️ Ignored (Inspect)			Aug 7, 2025 11:09am

[codecov]

Bundle Report

Changes will increase total bundle size by 2.91kB (0.01%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
sentry-docs-client-array-push	9.85MB	-6 bytes (-0.0%) ⬇️
sentry-docs-server-cjs	12.37MB	2.92kB (0.02%) ⬆️

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%
server/middleware-*.js	5.55kB	6.55kB	555.3% ⚠️
server/middleware-*.js	-5.55kB	1.0kB	-84.74%
static/Ja8YvbGJU1kiv8DUYezTz/_buildManifest.js (New)	684 bytes	684 bytes	100.0% 🚀
static/Ja8YvbGJU1kiv8DUYezTz/_ssgManifest.js (New)	77 bytes	77 bytes	100.0% 🚀
static/tCp7SmMtEcmsvpQZSRAEU/_buildManifest.js (Deleted)	-684 bytes	0 bytes	-100.0% 🗑️
static/tCp7SmMtEcmsvpQZSRAEU/_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	1.77MB	-0.0%
../instrumentation.js	-3 bytes	1.1MB	-0.0%
9523.js	-3 bytes	1.08MB	-0.0%
../app/[[...path]]/page.js.nft.json	975 bytes	742.72kB	0.13%
../app/platform-redirect/page.js.nft.json	975 bytes	742.64kB	0.13%
../app/sitemap.xml/route.js.nft.json	975 bytes	740.11kB	0.13%

[JoshuaMoelans]

superseded by #14586