fix(replay): Ensure network breadcrumbs have all data

[mydea]

We actually noticed that the recent change to enrich the replay breadcrumbs doesn't work as expected.
The reason is that we weren't actually listening to the breadcrumb, but actually doing our own instrumentation.

This refactors this to fully use the new breadcrumb hook for this whole functionality. It also adds a bunch of tests to ensure this actually works as expected.

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	20.49 KB (+0.17% 🔺)
@sentry/browser - ES5 CDN Bundle (minified)	63.56 KB (+0.3% 🔺)
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	19.11 KB (+0.23% 🔺)
@sentry/browser - ES6 CDN Bundle (minified)	56.63 KB (+0.36% 🔺)
@sentry/browser - Webpack (gzipped + minified)	21.68 KB (+0.17% 🔺)
@sentry/browser - Webpack (minified)	72.17 KB (+0.28% 🔺)
@sentry/react - Webpack (gzipped + minified)	21.72 KB (+0.18% 🔺)
@sentry/nextjs Client - Webpack (gzipped + minified)	52.05 KB (+0.07% 🔺)
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	33.78 KB (+0.1% 🔺)
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	26.14 KB (+0.13% 🔺)
@sentry/replay ES6 CDN Bundle (gzipped + minified)	44 KB (+0.33% 🔺)
@sentry/replay - Webpack (gzipped + minified)	38.07 KB (+0.35% 🔺)
@sentry/browser + @sentry/tracing + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	62.22 KB (+0.27% 🔺)
@sentry/browser + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	55.3 KB (+0.33% 🔺)

[Lms24]

LGTM!