test(ember): Test that prod builds & source maps work

[mydea]

broccoli-terser-sourcemap fixed a bug in v4.1.1 that affected building our SDK.

This adds a test to ensure this continues to work.

Closes #9168

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser (incl. Tracing, Replay) - Webpack (gzipped)	65.9 KB (0%)
@sentry/browser (incl. Tracing, Replay) - Webpack with treeshaking flags (gzipped)	56.15 KB (0%)
@sentry/browser (incl. Tracing) - Webpack (gzipped)	30.97 KB (0%)
@sentry/browser - Webpack (gzipped)	21.29 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (gzipped)	62.44 KB (0%)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (gzipped)	29.09 KB (0%)
@sentry/browser - ES6 CDN Bundle (gzipped)	21.23 KB (0%)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (minified & uncompressed)	196.88 KB (0%)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (minified & uncompressed)	88.28 KB (0%)
@sentry/browser - ES6 CDN Bundle (minified & uncompressed)	63.28 KB (0%)
@sentry/browser (incl. Tracing) - ES5 CDN Bundle (gzipped)	31.8 KB (0%)
@sentry/react (incl. Tracing, Replay) - Webpack (gzipped)	66.27 KB (0%)
@sentry/react - Webpack (gzipped)	21.34 KB (0%)
@sentry/nextjs Client (incl. Tracing, Replay) - Webpack (gzipped)	82.97 KB (0%)
@sentry/nextjs Client - Webpack (gzipped)	48.12 KB (0%)
@sentry-internal/feedback - Webpack (gzipped)	15.59 KB (0%)