feat: [SDK-2121] implement session replay for react native android

[beekld]

Summary

This is a fairly straightforward adaptation of the iOS version of the plugin.

How did you test this change?

There are some unit tests, but the primary test was by creating a react native test app, configuring it with my own LD key, and verifying that Android session replay worked the same as iOS session replay.

Are there any deployment considerations?

No.

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Note

Medium Risk
Introduces new Android-native initialization and lifecycle control for session replay using LaunchDarkly Observability/SessionReplay plugins, which could affect app startup and data capture behavior if misconfigured.

Overview
Adds Android session replay support to @launchdarkly/react-native-ld-session-replay, replacing the previous “not supported” rejections with real configure/startSessionReplay/stopSessionReplay implementations.

Introduces SessionReplayClientAdapter to initialize an offline LDClient with the Observability and SessionReplay plugins, apply enable/disable via LDReplay.start()/stop(), and map JS options into ReplayOptions privacy masking settings on the main thread.

Updates Android Gradle dependencies and unit test setup (JUnit5 + MockK), and adds both Kotlin and JS unit tests to cover option mapping and basic configure/start behavior.

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Related Jira issue: SDK-2121: Implement Session Replay for React Native Android.

[abelonogov-ld]

Android launching looks good!

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

There are 2 total unresolved issues (including 1 from previous review).

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