Next.js Improvements Epic

[scttcper]

PRD

https://www.notion.so/sentry/Next-js-Improvements-b82fc046255b4af2a40c0cbbda5ecec5

Milestone 1 (Initial Discovery)

Being tracked internally here

### Milestone 2 ("Fix now" Tasks)
- [ ] https://github.com/getsentry/sentry/issues/60054
- [ ] https://github.com/getsentry/sentry/issues/60066
- [ ] https://github.com/getsentry/sentry/issues/60069
- [ ] https://github.com/getsentry/sentry/issues/57458
- [ ] https://github.com/getsentry/sentry/issues/60979
- [x] https://github.com/getsentry/sentry/issues/61326
- [ ] https://github.com/getsentry/sentry/issues/61469
- [ ] https://github.com/getsentry/sentry/issues/61520
- [ ] https://github.com/getsentry/sentry/issues/61707
- [ ] https://github.com/getsentry/sentry/issues/61270
- [ ] https://github.com/getsentry/sentry/issues/64104

### Replay Hydration Diff
- [ ] https://github.com/getsentry/sentry/issues/61613
- [ ] https://github.com/getsentry/sentry/issues/61725
- [ ] https://github.com/getsentry/sentry/issues/60395
- [ ] https://github.com/getsentry/sentry/issues/61845
- [ ] https://github.com/getsentry/sentry/issues/61846
- [ ] https://github.com/getsentry/sentry/issues/61849
- [ ] https://github.com/getsentry/sentry/issues/61847
- [ ] https://github.com/getsentry/sentry/issues/61943
- [ ] https://github.com/getsentry/sentry/issues/62095

### Nextjs Grouping
- [ ] https://github.com/getsentry/sentry/issues/60021
- [ ] https://github.com/getsentry/sentry/issues/60443
- [ ] https://github.com/getsentry/sentry/issues/60713

### Vercel
- [ ] https://github.com/getsentry/team-issues/issues/13
- [ ] https://github.com/getsentry/sentry/issues/60056
- [ ] https://github.com/getsentry/sentry/issues/23875
- [ ] https://github.com/getsentry/sentry/issues/60017
- [ ] https://github.com/getsentry/sentry/issues/60611
- [ ] https://github.com/getsentry/sentry/issues/62043
- [ ] https://github.com/getsentry/sentry/issues/60063
- [ ] https://github.com/getsentry/sentry/issues/64296
- [ ] https://github.com/getsentry/sentry/issues/64297
- [ ] https://github.com/getsentry/sentry/issues/64679