Based on RSocket's battle-tested configuration:
- Add maxWebSocketListeners config option (default: 20)
- 8 base WS events + 10 dynamic listeners + 2 buffer slots
- Add maxSocketClientListeners config option (default: 50)
- Replace dangerous setMaxListeners(0) with configurable limits
- Add warning log if user explicitly sets limit to 0
BREAKING: Previous behavior used setMaxListeners(0) which removed
all limits. Now defaults to safe limits but can be overridden via config.
* fix: ensure proper socket closure and await connection termination in tests
* feat(tests): enhance E2E tests for image and video message handling, including downloads and group interactions