ref(node-experimental): Rename errorHandler to expressErrorHandler

[mydea]

Also provide a new setupExpressErrorHandler(app) utility.

[AbhiPrasad]

Needs a migration note. Sorry it doesn't, this is node experimental 😅

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser (incl. Tracing, Replay, Feedback) - Webpack (gzipped)	77.78 KB (0%)
@sentry/browser (incl. Tracing, Replay) - Webpack (gzipped)	69.04 KB (0%)
@sentry/browser (incl. Tracing, Replay with Canvas) - Webpack (gzipped)	72.97 KB (0%)
@sentry/browser (incl. Tracing, Replay) - Webpack with treeshaking flags (gzipped)	62.52 KB (0%)
@sentry/browser (incl. Tracing) - Webpack (gzipped)	33.24 KB (0%)
@sentry/browser (incl. browserTracingIntegration) - Webpack (gzipped)	33.15 KB (0%)
@sentry/browser (incl. Feedback) - Webpack (gzipped)	31.14 KB (0%)
@sentry/browser (incl. sendFeedback) - Webpack (gzipped)	31.14 KB (0%)
@sentry/browser - Webpack (gzipped)	22.4 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback) - ES6 CDN Bundle (gzipped)	76.03 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (gzipped)	67.53 KB (0%)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (gzipped)	33.49 KB (0%)
@sentry/browser - ES6 CDN Bundle (gzipped)	24.68 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (minified & uncompressed)	212.29 KB (0%)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (minified & uncompressed)	101 KB (0%)
@sentry/browser - ES6 CDN Bundle (minified & uncompressed)	73.81 KB (0%)
@sentry/browser (incl. Tracing) - ES5 CDN Bundle (gzipped)	36.79 KB (0%)
@sentry/react (incl. Tracing, Replay) - Webpack (gzipped)	69.33 KB (0%)
@sentry/react - Webpack (gzipped)	22.43 KB (0%)
@sentry/nextjs Client (incl. Tracing, Replay) - Webpack (gzipped)	86.82 KB (0%)
@sentry/nextjs Client - Webpack (gzipped)	50.06 KB (0%)
@sentry-internal/feedback - Webpack (gzipped)	17.16 KB (0%)

[mydea]

Yeah for the node package we'll need more in-depth migration guides anyhow 😬 as there a lot will change (but mostly it will mean removing code you don't need anymore).