test(condition): add comprehensive unit tests for ipc::sync::condition

- Test condition variable construction (default and named)
- Test wait, notify, and broadcast operations
- Test timed wait with timeout and infinite wait
- Test integration with mutex for synchronization
- Test producer-consumer patterns with condition variables
- Test multiple waiters with broadcast
- Test spurious wakeup handling patterns
- Test named condition variable sharing between threads
- Test resource cleanup (clear, clear_storage)
- Test edge cases (after clear, immediate notify)

Author: mutouyun