test(nestjs): Better e2e test for nest.js

[mydea]

Our nest e2e test was not fully correct, and did not test the creation of actual nest.js core spans (only http & express spans).

This updates the test setup & check to account for this.

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser	21.72 KB (0%)
@sentry/browser (incl. Tracing)	32.86 KB (0%)
@sentry/browser (incl. Tracing, Replay)	68.21 KB (0%)
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	61.6 KB (0%)
@sentry/browser (incl. Tracing, Replay with Canvas)	72.25 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback)	84.25 KB (0%)
@sentry/browser (incl. Feedback)	37.68 KB (0%)
@sentry/browser (incl. sendFeedback)	26.29 KB (0%)
@sentry/browser (incl. FeedbackAsync)	30.66 KB (0%)
@sentry/react	24.41 KB (0%)
@sentry/react (incl. Tracing)	35.85 KB (0%)
@sentry/vue	25.65 KB (0%)
@sentry/vue (incl. Tracing)	34.68 KB (0%)
@sentry/svelte	21.86 KB (0%)
CDN Bundle	24.26 KB (0%)
CDN Bundle (incl. Tracing)	34.29 KB (0%)
CDN Bundle (incl. Tracing, Replay)	67.99 KB (0%)
CDN Bundle (incl. Tracing, Replay, Feedback)	72.95 KB (0%)
CDN Bundle - uncompressed	71.33 KB (0%)
CDN Bundle (incl. Tracing) - uncompressed	101.68 KB (0%)
CDN Bundle (incl. Tracing, Replay) - uncompressed	211.3 KB (0%)
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	223.6 KB (0%)
@sentry/nextjs (client)	35.07 KB (0%)
@sentry/sveltekit (client)	33.44 KB (0%)
@sentry/node	141.32 KB (+0.19% 🔺)
@sentry/aws-serverless	128.08 KB (0%)