Verify device-state breadcrumbs render correctly in replay timeline

[antonis]

Once device-state breadcrumbs flow through JS and are available on all events, verify they also render correctly in the replay timeline.

Check:

• Do bridged breadcrumbs show up in the replay breadcrumb panel with the right category, message, and timestamp?
• Are native-only breadcrumbs (that already pass through defaultConverter) still formatted well, or do they need converter changes for better labels/data?
• Any regressions from the dedup work?

Scope: Investigative + possible small fixes in RNSentryReplayBreadcrumbConverter on iOS/Android. Depends on bridging and dedup tasks.

[linear-code]

RN-613