fix(build): Fix references to rollup.bundle.config.js

[lobsterkatie]

This fixes a few spots where #4950 missed changing references to the new name for our rollup config for CDN bundles, rollup.bundle.config.js.

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	18.76 KB (-6.87% 🔽)
@sentry/browser - ES5 CDN Bundle (minified)	58.59 KB (-9.32% 🔽)
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	17.55 KB (-6.96% 🔽)
@sentry/browser - ES6 CDN Bundle (minified)	52.77 KB (-8.97% 🔽)
@sentry/browser - Webpack (gzipped + minified)	19.37 KB (-16.66% 🔽)
@sentry/browser - Webpack (minified)	61.85 KB (-24.31% 🔽)
@sentry/react - Webpack (gzipped + minified)	19.39 KB (-16.69% 🔽)
@sentry/nextjs Client - Webpack (gzipped + minified)	42.87 KB (-10.8% 🔽)
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	24.42 KB (-6.33% 🔽)
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	22.99 KB (-6.08% 🔽)