Test with Hermes V1

[antonis]

Hermes V1 is the next evolution of Hermes, with improvements in the compiler and the VM that significantly boost JavaScript performance.

https://reactnative.dev/blog/2025/12/10/react-native-0.83#experimental---hermes-v1

We should test with it, identify any changes needed to fully support it and open issues

[linear]

RN-439

[antonis]

Noting that this would be the default for 0.84+ https://github.com/facebook/react-native/releases/tag/v0.84.0-rc.1

[antonis]

Verified via #5941 (sample app bump to RN 0.84.1 with Hermes V1 as default engine).

No SDK code changes needed for Hermes V1 support. The NEW_HERMES_RUNTIME ifdef was already in place for RN >= 0.81, and all core functionality works out of the box:

• ✅ Error capture (promise rejection tracking via HermesInternal)
• ✅ Profiling (HermesSamplingProfiler API)
• ✅ Tracing (navigation spans, app start)
• ✅ Bytecode frame handling (version-agnostic lineno === 1 + funcVirtAddr + offset formula)
• ✅ E2E tests pass on Android RN 0.84.0