feat(react-native): Propagate LDContext to Android session replay via afterIdentify hook

[beekld]

Summary

Wires LDContext changes from the React Native LaunchDarkly SDK through to the Android Session Replay instance so that session replay sessions are correctly attributed to the identified user/context. Re-uses the existing hook for MAUI.

Also changes the default context to be an anonymous context, rather than "placeholder", per advice from the JS SDK team.

Test plan

• New unit tests in JS and Android.
• Manual: run the React Native example app and verify sessions are attributed correctly in the session replay backend.

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Note

Medium Risk
Adds a new cross-platform afterIdentify bridge and changes Android initialization context handling, which can affect session attribution and replay data if the context/canonical key logic is wrong. Scope is limited to session replay integrations and includes new unit tests to reduce regression risk.

Overview
Propagates React Native identify() context changes into native Session Replay so replay sessions are attributed to the correct user/context.

On React Native, adds an afterIdentify TurboModule API plus a plugin Hook.afterIdentify that converts LDContext (single/multi/legacy) into {kind: key} maps and a canonical key (with escaping and deterministic ordering) before calling native.

On Android, the RN adapter now accepts afterIdentify, caches the latest completed LDContext, forwards it to LDReplay.hookProxy?.afterIdentify(...), and uses the cached (anonymous-by-default) context during LDClient.init instead of a placeholder; includes Android + JS unit tests. iOS stubs the new method for parity.

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[abelonogov-ld]

Cool! Merge after fixing Cursor comments

[cursor]

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

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