Improve Coordinator Socket reconnection with TokenRepository

[rahul-lohra]

Goal

Improve coordinator socket reconnection behavior after the JWT token expires.

Implementation

We need to solve 2 problems

1. Renewing the JWT token reliably
2. Ensuring a single source of truth for JWT storage and retrieval across the SDK

1. Renewing the JWT token reliably

1. We are renewing the token in CoordinatorSocket.onVideoNetworkError
2. Due to the multi-threaded nature of socket event handling, token renewal could previously behave inconsistently.
   To fix this, CoordinatorSocketConnection will now process its events on a single dedicated thread, ensuring deterministic execution and avoiding race conditions during JWT refresh.

2. Single Source of Truth for JWT

To ensure that every component consistently uses the latest token:

1. Introduce a new TokenRepository, responsible for storing and providing the most up-to-date JWT.

2. Remove all logic where classes previously kept their own copy of the token string and replace it with calls to TokenRepository.

3. Add two new TokenProvider implementations:

   • PersistingTokenProvider
     Similar to CacheableTokenProvider, but also persists the freshly fetched token into TokenRepository.
   • RepositoryTokenProvider
     A lightweight provider that simply returns the token stored in TokenRepository.

4. Replace CacheableTokenProvider usage with PersistingTokenProvider where token updates must be tracked.

5. Replace ConstantTokenProvider usage with RepositoryTokenProvider where consumers only need to read the token.

🎨 UI Changes

None

Testing

1. Reduce the JWT expiry time to 30 seconds using StreamService.TOKEN_EXPIRY_TIME to trigger rapid token expiration.
2. Start a new call.
3. Open the logs.
4. You should observe a JWTAuth error, indicating that the JWT token has expired.
5. The built-in retry mechanism should automatically attempt reconnection with a new token.
6. Send a reaction.
7. You should now see custom events from the coordinator socket, confirming that:
   • The JWT was successfully refreshed, and
   • The coordinator connection is receiving events again.

[github-actions]

PR checklist ✅

All required conditions are satisfied:

• Title length is OK (or ignored by label).
• At least one pr: label exists.
• Sections ### Goal, ### Implementation, and ### Testing are filled.

🎉 Great job! This PR is ready for review.

[github-actions]

SDK Size Comparison 📏

SDK	Before	After	Difference	Status
stream-video-android-core	11.94 MB	11.94 MB	0.00 MB	🟢
stream-video-android-ui-xml	5.68 MB	5.68 MB	0.00 MB	🟢
stream-video-android-ui-compose	6.27 MB	6.27 MB	0.00 MB	🟢

[sonarqubecloud]

Quality Gate failed

Failed conditions
57.7% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud