fix(core): Instrument langgraph createReactAgent

[nicohrubec]

WIP - implementation still broken (not getting spans)

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	24.8 kB	-	-
@sentry/browser - with treeshaking flags	23.31 kB	-	-
@sentry/browser (incl. Tracing)	41.54 kB	-	-
@sentry/browser (incl. Tracing, Profiling)	46.13 kB	-	-
@sentry/browser (incl. Tracing, Replay)	79.96 kB	-	-
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	69.68 kB	-	-
@sentry/browser (incl. Tracing, Replay with Canvas)	84.64 kB	-	-
@sentry/browser (incl. Tracing, Replay, Feedback)	96.88 kB	-	-
@sentry/browser (incl. Feedback)	41.48 kB	-	-
@sentry/browser (incl. sendFeedback)	29.49 kB	-	-
@sentry/browser (incl. FeedbackAsync)	34.47 kB	-	-
@sentry/react	26.52 kB	-	-
@sentry/react (incl. Tracing)	43.74 kB	-	-
@sentry/vue	29.25 kB	-	-
@sentry/vue (incl. Tracing)	43.34 kB	-	-
@sentry/svelte	24.82 kB	-	-
CDN Bundle	27.21 kB	-	-
CDN Bundle (incl. Tracing)	42.21 kB	-	-
CDN Bundle (incl. Tracing, Replay)	78.75 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback)	84.2 kB	-	-
CDN Bundle - uncompressed	79.96 kB	-	-
CDN Bundle (incl. Tracing) - uncompressed	125.34 kB	-	-
CDN Bundle (incl. Tracing, Replay) - uncompressed	241.37 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	254.13 kB	-	-
@sentry/nextjs (client)	45.96 kB	-	-
@sentry/sveltekit (client)	41.9 kB	-	-
@sentry/node-core	51.27 kB	+0.01%	+1 B 🔺
@sentry/node	159.6 kB	+0.05%	+74 B 🔺
@sentry/node - without tracing	92.85 kB	-	-
@sentry/aws-serverless	108.14 kB	-	-

View base workflow run

[github-actions]

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	8,511	-	8,891	-4%
GET With Sentry	1,616	19%	1,703	-5%
GET With Sentry (error only)	5,958	70%	6,075	-2%
POST Baseline	1,170	-	1,184	-1%
POST With Sentry	578	49%	575	+1%
POST With Sentry (error only)	1,045	89%	1,037	+1%
MYSQL Baseline	3,268	-	3,255	+0%
MYSQL With Sentry	391	12%	434	-10%
MYSQL With Sentry (error only)	2,618	80%	2,653	-1%

View base workflow run