ref(replay): Streamline rrweb internal error check

[mydea]

I think we don't really need this anymore, and this doesn't even work anyhow in any minified scenario, so we can safe these bundle bytes & also the work to check this on each error.

Or @billyvg do you see scenarios where this would catch something that the check above wouldn't? 🤔

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser (incl. Tracing, Replay) - Webpack (gzipped)	77.33 KB (-0.09% 🔽)
@sentry/browser (incl. Tracing, Replay) - Webpack with treeshaking flags (gzipped)	66.39 KB (-0.09% 🔽)
@sentry/browser (incl. Tracing) - Webpack (gzipped)	30.94 KB (0%)
@sentry/browser - Webpack (gzipped)	21.26 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (gzipped)	67.57 KB (-0.09% 🔽)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (gzipped)	28.93 KB (0%)
@sentry/browser - ES6 CDN Bundle (gzipped)	21.09 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (minified & uncompressed)	216.16 KB (-0.09% 🔽)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (minified & uncompressed)	87.77 KB (0%)
@sentry/browser - ES6 CDN Bundle (minified & uncompressed)	62.76 KB (0%)
@sentry/browser (incl. Tracing) - ES5 CDN Bundle (gzipped)	31.71 KB (0%)
@sentry/react (incl. Tracing, Replay) - Webpack (gzipped)	77.72 KB (-0.08% 🔽)
@sentry/react - Webpack (gzipped)	21.29 KB (0%)
@sentry/nextjs Client (incl. Tracing, Replay) - Webpack (gzipped)	94.06 KB (-0.06% 🔽)
@sentry/nextjs Client - Webpack (gzipped)	47.83 KB (0%)

[billyvg]

It's possible we've missed applying our error handler in the rrweb codebase, but I agree we probably shouldn't rely on this as it's not very reliable.