fix(node): Fix sample rand propagation for negative sampling decisions

[lforst]

We had a bug because for DSC creation we were reading the propagation context off the scope of a particular span. Turns out we cannot do that in otel for NonRecordingSpans. As a workaround we now write the sample rand when a span's sampling decision is made onto the span's context's trace state, and then read it when we create the DSC for that span. As a fallback we still attempt to read from the span's scope - this should work for all non-OTEL runtimes.

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	22.87 KB	+0.04%	+9 B 🔺
@sentry/browser - with treeshaking flags	21.54 KB	+0.06%	+12 B 🔺
@sentry/browser (incl. Tracing)	35.57 KB	+0.03%	+9 B 🔺
@sentry/browser (incl. Tracing, Replay)	72.38 KB	+0.01%	+6 B 🔺
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	62.87 KB	+0.02%	+10 B 🔺
@sentry/browser (incl. Tracing, Replay with Canvas)	76.63 KB	+0.01%	+7 B 🔺
@sentry/browser (incl. Tracing, Replay, Feedback)	88.63 KB	+0.01%	+7 B 🔺
@sentry/browser (incl. Feedback)	39.09 KB	+0.03%	+10 B 🔺
@sentry/browser (incl. sendFeedback)	27.51 KB	+0.03%	+8 B 🔺
@sentry/browser (incl. FeedbackAsync)	32.28 KB	+0.03%	+9 B 🔺
@sentry/react	25.57 KB	+0.04%	+9 B 🔺
@sentry/react (incl. Tracing)	38.37 KB	+0.02%	+7 B 🔺
@sentry/vue	26.95 KB	+0.03%	+8 B 🔺
@sentry/vue (incl. Tracing)	37.32 KB	+0.03%	+8 B 🔺
@sentry/svelte	23 KB	+0.04%	+9 B 🔺
CDN Bundle	24.28 KB	+0.04%	+8 B 🔺
CDN Bundle (incl. Tracing)	35.91 KB	+0.03%	+8 B 🔺
CDN Bundle (incl. Tracing, Replay)	70.54 KB	+0.02%	+9 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback)	75.68 KB	+0.02%	+8 B 🔺
CDN Bundle - uncompressed	70.83 KB	+0.05%	+30 B 🔺
CDN Bundle (incl. Tracing) - uncompressed	106.46 KB	+0.03%	+30 B 🔺
CDN Bundle (incl. Tracing, Replay) - uncompressed	217.28 KB	+0.02%	+30 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	229.82 KB	+0.02%	+30 B 🔺
@sentry/nextjs (client)	38.48 KB	+0.03%	+9 B 🔺
@sentry/sveltekit (client)	36.11 KB	+0.02%	+7 B 🔺
@sentry/node	161.35 KB	+0.02%	+31 B 🔺
@sentry/node - without tracing	97.14 KB	+0.03%	+28 B 🔺
@sentry/aws-serverless	127.03 KB	+0.03%	+33 B 🔺

View base workflow run

[codecov]

❌ 3 Tests Failed:

Tests completed	Failed	Passed	Skipped
688	3	685	299

View the top 2 failed tests by shortest run time

basic.test.ts Lambda layer SDK bundle sends events

Stack Traces | 133s run time

basic.test.ts:5:5 Lambda layer SDK bundle sends events

basic.test.ts AWS Serverless SDK sends events in ESM mode

Stack Traces | 133s run time

basic.test.ts:5:5 AWS Serverless SDK sends events in ESM mode

View the full list of 1 ❄️ flaky tests

request-instrumentation.test.ts Should send a transaction with a fetch span

Flake rate in main: 36.36% (Passed 7 times, Failed 4 times)

Stack Traces | 30s run time

request-instrumentation.test.ts:4:5 Should send a transaction with a fetch span

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