fix(node): Avoid using dynamic require for fastify integration

[mydea]

Not sure why we even have this, but this somehow breaks cloudflare-pages E2E tests in some scenarios. It also seems simply unnecessary - or is there a reason we have this? 🤔

Extracted this out from #16783

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	23.99 kB	-	-
@sentry/browser - with treeshaking flags	23.76 kB	-	-
@sentry/browser (incl. Tracing)	39.59 kB	-	-
@sentry/browser (incl. Tracing, Replay)	77.69 kB	-	-
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	70.78 kB	-	-
@sentry/browser (incl. Tracing, Replay with Canvas)	82.45 kB	-	-
@sentry/browser (incl. Tracing, Replay, Feedback)	94.57 kB	-	-
@sentry/browser (incl. Feedback)	40.75 kB	-	-
@sentry/browser (incl. sendFeedback)	28.7 kB	-	-
@sentry/browser (incl. FeedbackAsync)	33.59 kB	-	-
@sentry/react	25.76 kB	-	-
@sentry/react (incl. Tracing)	41.58 kB	-	-
@sentry/vue	28.37 kB	-	-
@sentry/vue (incl. Tracing)	41.4 kB	-	-
@sentry/svelte	24.01 kB	-	-
CDN Bundle	25.5 kB	-	-
CDN Bundle (incl. Tracing)	39.6 kB	-	-
CDN Bundle (incl. Tracing, Replay)	75.5 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback)	80.96 kB	-	-
CDN Bundle - uncompressed	74.5 kB	-	-
CDN Bundle (incl. Tracing) - uncompressed	117.63 kB	-	-
CDN Bundle (incl. Tracing, Replay) - uncompressed	231.68 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	244.5 kB	-	-
@sentry/nextjs (client)	43.22 kB	-	-
@sentry/sveltekit (client)	40.04 kB	-	-
@sentry/node	161.97 kB	+4.97%	+7.66 kB 🔺
@sentry/node - without tracing	98.64 kB	+0.01%	+1 B 🔺
@sentry/aws-serverless	124.4 kB	-	-

View base workflow run

[andreiborza]

Had a look through https://github.com/fastify/otel/blob/main/index.js but couldn't really see why it would be dynamically required either.