fix(node-experimental): Ensure http.status_code is always a string

[mydea]

Noticed here: #10168, tags should always be strings.

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser (incl. Tracing, Replay, Feedback) - Webpack (gzipped)	77.01 KB (0%)
@sentry/browser (incl. Tracing, Replay) - Webpack (gzipped)	68.37 KB (0%)
@sentry/browser (incl. Tracing, Replay) - Webpack with treeshaking flags (gzipped)	62.03 KB (0%)
@sentry/browser (incl. Tracing) - Webpack (gzipped)	32.4 KB (0%)
@sentry/browser (incl. Feedback) - Webpack (gzipped)	31 KB (0%)
@sentry/browser - Webpack (gzipped)	22.33 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback) - ES6 CDN Bundle (gzipped)	74.69 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (gzipped)	66.34 KB (0%)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (gzipped)	32.16 KB (0%)
@sentry/browser - ES6 CDN Bundle (gzipped)	23.97 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (minified & uncompressed)	208.97 KB (0%)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (minified & uncompressed)	97.02 KB (0%)
@sentry/browser - ES6 CDN Bundle (minified & uncompressed)	71.62 KB (0%)
@sentry/browser (incl. Tracing) - ES5 CDN Bundle (gzipped)	35.18 KB (0%)
@sentry/react (incl. Tracing, Replay) - Webpack (gzipped)	68.75 KB (0%)
@sentry/react - Webpack (gzipped)	22.38 KB (0%)
@sentry/nextjs Client (incl. Tracing, Replay) - Webpack (gzipped)	85.41 KB (0%)
@sentry/nextjs Client - Webpack (gzipped)	49.53 KB (0%)
@sentry-internal/feedback - Webpack (gzipped)	17 KB (0%)