build: Generate errors + replay only CDN bundle

[AbhiPrasad]

Resolves #7066

Generate CDN bundle (es6 only) for Replay + errors. This gives us all the possible permutations between errors, replays and performance to dynamically load CDN bundle as appropriate for the new loader work.

[AbhiPrasad]

Hmm, I wonder why the integration tests fail 🤔

[Lms24]

LGTM! I think the failing PW tests are more related to the Ubuntu registry problem than the PR...

m: Can we add a size-check entry for the bundle? (feel free to do that in a follow-up PR)

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	20.06 KB (-0.02% 🔽)
@sentry/browser - ES5 CDN Bundle (minified)	62.19 KB (0%)
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	18.69 KB (0%)
@sentry/browser - ES6 CDN Bundle (minified)	55.33 KB (0%)
@sentry/browser - Webpack (gzipped + minified)	20.42 KB (0%)
@sentry/browser - Webpack (minified)	66.77 KB (0%)
@sentry/react - Webpack (gzipped + minified)	20.45 KB (0%)
@sentry/nextjs Client - Webpack (gzipped + minified)	47.74 KB (0%)
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	26.97 KB (-0.01% 🔽)
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	25.23 KB (-0.01% 🔽)
@sentry/replay ES6 CDN Bundle (gzipped + minified)	43.85 KB (-0.01% 🔽)
@sentry/replay - Webpack (gzipped + minified)	38.76 KB (0%)
@sentry/browser + @sentry/tracing + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	61.57 KB (-0.01% 🔽)
@sentry/browser + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	55.09 KB (added)