[Epic] Update to rrweb 2.0 in SDK and in sentry

[bruno-garcia]

See https://github.com/rrweb-io/rrweb/releases to track release status

Benefits

• Support for canvas
  • Add <canvas> support for Replay sentry-javascript#6519
  • Can we treeshake it out if canvas is not opt'ed in
• Support for cross origin iframes
  • Support for iframes in Session Replay sentry-javascript#7279
• Less maintenance overhead with our own patched v1
• Fixes
  • Styles not rendered properly when seeking backwards in playback #57
  • @sentry/replay significant performance decrease when enabled sentry-javascript#8469
  • Web component styles are not being recording in replays sentry-javascript#8123

Risks:

• Still Alpha
• Package size is ~40% larger

### Tasks
- [ ] https://github.com/getsentry/team-replay/issues/25
- [x] Make sure the tests we added work on rrweb 2.0
- [ ] Assess treeshaking opportunities for features we don't use/need
- [x] Run agains the performance tool to verify change from 1.0
- [x] Update docs with new bundle size and overhead numbers

Related:

• Support for iframes in Session Replay sentry-javascript#7279
• Replay is making my Angular app super slow sentry-javascript#6946

[mydea]

This is esp. interesting IMHO: rrweb-io#1127

Refactor: Improve performance by 80% in a super large benchmark case.

[billyvg]

Released in 7.73.0!