chore: Make sure we run sentry-internal unit tests

[AbhiPrasad]

Building on top of #8430, this PR makes a quick fix to make sure we are running unit tests for @sentry-internal/eslint-plugin, @sentry-internal/tracing, and @sentry-internal/replay-worker. This was found not to be running before because we had a blanket --ignore @sentry-internal/* when making lerna run tests.

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	21.79 KB (+0.08% 🔺)
@sentry/browser - ES5 CDN Bundle (minified)	68.55 KB (+0.16% 🔺)
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	20.1 KB (+0.09% 🔺)
@sentry/browser - ES6 CDN Bundle (minified)	59.79 KB (+0.14% 🔺)
@sentry/browser - Webpack (gzipped + minified)	21.71 KB (+0.12% 🔺)
@sentry/browser - Webpack (minified)	70.93 KB (+0.14% 🔺)
@sentry/react - Webpack (gzipped + minified)	21.73 KB (+0.07% 🔺)
@sentry/nextjs Client - Webpack (gzipped + minified)	50.22 KB (-0.09% 🔽)
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	29.76 KB (-0.02% 🔽)
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	27.82 KB (-0.07% 🔽)
@sentry/replay ES6 CDN Bundle (gzipped + minified)	49.44 KB (+0.02% 🔺)
@sentry/replay - Webpack (gzipped + minified)	43.12 KB (0%)
@sentry/browser + @sentry/tracing + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	69.2 KB (-0.03% 🔽)
@sentry/browser + @sentry/replay - ES6 CDN Bundle (gzipped + minified)	61.66 KB (+0.03% 🔺)

[mydea]

One more reason to finally tackle #6711 😅 this is basically exactly this, we want to not run really private tests but run tests for internal packages. But for now this is a good fix.