fx(node): Fix anr worker check

[mydea]

I've removed the hub global on the carrier in a recent PR, and noticed this leftover. Guess this is not used/covered by tests...? It should work with using acs as that should now always be set too (also for the default case), unless sentry is not initialized. But for type safety, the acs may be undefined.

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser (incl. Tracing, Replay, Feedback) - Webpack (gzipped)	77.81 KB (-0.11% 🔽)
@sentry/browser (incl. Tracing, Replay) - Webpack (gzipped)	69.07 KB (-0.14% 🔽)
@sentry/browser (incl. Tracing, Replay with Canvas) - Webpack (gzipped)	73 KB (-0.14% 🔽)
@sentry/browser (incl. Tracing, Replay) - Webpack with treeshaking flags (gzipped)	62.64 KB (-0.17% 🔽)
@sentry/browser (incl. Tracing) - Webpack (gzipped)	33.25 KB (-0.32% 🔽)
@sentry/browser (incl. browserTracingIntegration) - Webpack (gzipped)	33.17 KB (-0.29% 🔽)
@sentry/browser (incl. Feedback) - Webpack (gzipped)	31.15 KB (-0.27% 🔽)
@sentry/browser (incl. sendFeedback) - Webpack (gzipped)	31.14 KB (-0.3% 🔽)
@sentry/browser - Webpack (gzipped)	22.4 KB (-0.39% 🔽)
@sentry/browser (incl. Tracing, Replay, Feedback) - ES6 CDN Bundle (gzipped)	76.17 KB (-0.14% 🔽)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (gzipped)	67.68 KB (-0.15% 🔽)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (gzipped)	33.59 KB (-0.37% 🔽)
@sentry/browser - ES6 CDN Bundle (gzipped)	24.71 KB (-0.43% 🔽)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (minified & uncompressed)	213 KB (-0.12% 🔽)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (minified & uncompressed)	101.62 KB (-0.25% 🔽)
@sentry/browser - ES6 CDN Bundle (minified & uncompressed)	74.11 KB (-0.33% 🔽)
@sentry/browser (incl. Tracing) - ES5 CDN Bundle (gzipped)	36.86 KB (-0.26% 🔽)
@sentry/react (incl. Tracing, Replay) - Webpack (gzipped)	69.41 KB (-0.13% 🔽)
@sentry/react - Webpack (gzipped)	22.43 KB (-0.41% 🔽)
@sentry/nextjs Client (incl. Tracing, Replay) - Webpack (gzipped)	86.88 KB (-0.13% 🔽)
@sentry/nextjs Client - Webpack (gzipped)	50.09 KB (-0.2% 🔽)
@sentry-internal/feedback - Webpack (gzipped)	17.14 KB (-0.48% 🔽)

[timfish]

These values are checked in the integration tests but I guess they're ending up as empty strings which still pass:

sentry-javascript/dev-packages/node-integration-tests/suites/anr/test.ts

Lines 7 to 10 in 4f92ff0

	trace: {
	span_id: expect.any(String),
	trace_id: expect.any(String),
	},

I'll look into how these tests weren't failing!

[timfish]

Ah, these integration tests continued to pass because the trace context was still successfully read from __SENTRY__.hub. This is due to the following backwards compatibility code:

sentry-javascript/packages/core/src/hub.ts

Lines 660 to 665 in 4f92ff0

	}
	// eslint-disable-next-line deprecation/deprecation
	sentry.hub = new Hub(undefined, getDefaultCurrentScope(), getDefaultIsolationScope());
	return sentry.hub;
	}