Summary of changes

This PR integrates Android's ConnectivityManager to enable proactive and automatic reinitialization of the Clerk SDK when internet connectivity is restored.

Previously, if the device was offline during SDK initialization, it would remain uninitialized until a background/foreground app cycle or manual retry. With these changes:

1. Automatic Connectivity Detection: A new NetworkConnectivityMonitor utility listens for real-time network state changes.
2. Proactive Reinitialization: When connectivity is regained after being offline, the SDK automatically attempts to reinitialize (if not already initialized) or refreshes client/environment data (if already initialized).
3. No User Intervention Required: Initialization no longer depends on the user or app performing a background/foreground cycle to detect connectivity changes.
4. Permissions: Added ACCESS_NETWORK_STATE permission to AndroidManifest.xml.
5. Tests: Comprehensive unit tests for the NetworkConnectivityMonitor ensure reliable behavior.

Summary by CodeRabbit

Release Notes

• New Features

  • Added automatic recovery on connectivity restoration—the app now monitors network changes and intelligently retries initialization or refreshes data when internet connectivity is regained without requiring a restart.

• Tests

  • Expanded test coverage for network connectivity monitoring.

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