Complete React Native telemetry opt-out

[tiagocandido]

Summary

• Expose the default-on telemetry setting consistently through the React Native JavaScript API and both native bridges
• Make runtime opt-out stop recording, discard buffered measurements, and cancel active export work where supported
• Keep getConfig() and setConfig() round-tripping the same required boolean on iOS and Android
• Pin the native SDK pods exactly so local and CI resolution stay deterministic
• Document the bounded diagnostic data and explicit opt-out

Validation

• React Native unit tests
• React Native lint and TypeScript checks
• Android API dump and API compatibility checks
• Native bridge tests added for both platforms

Release dependency

The published native packages currently pinned by React Native do not yet expose the telemetry API, so full packaged native builds remain gated on telemetry-capable Swift and Android releases. The package pins are intentionally unchanged in this PR.