feat(core): Bump sentry-javascript to version 8

[krystofwoldrich]

:loudspeaker: Type of change

• [x] New feature
• [x] Enhancement
• [x] Refactoring

:scroll: Description

• Superseding https://github.com/getsentry/sentry-react-native/pull/3736

:green_heart: How did you test it?

• sample app, unit tests

:pencil: Checklist

• [x] I reviewed submitted code
• [x] I added tests to verify changes
• [x] No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled
• [x] All tests passing
• [ ] No breaking changes - JS V8

:crystal_ball: Next steps

• [ ] Write down breaking changes
• [ ] Add detailed changelog to the v6 branch
• [ ] Fix E2E Tests

#skip-changelog

[github-actions[bot]]

	Messages
:book:	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by :no_entry_sign: dangerJS against f77a8fc45e6bb3538078a0763506c290e361fdb9

[github-actions[bot]]

Android (legacy) Performance metrics :rocket:

	Plain	With Sentry	Diff
Startup time	435.00 ms	470.11 ms	35.11 ms
Size	17.73 MiB	19.91 MiB	2.17 MiB

[github-actions[bot]]

Android (new) Performance metrics :rocket:

	Plain	With Sentry	Diff
Startup time	375.35 ms	383.34 ms	7.99 ms
Size	7.15 MiB	8.18 MiB	1.04 MiB