📌 Summary

This PR fixes an issue where server-initiated requests were being sent without a valid request_id, which caused an assertion error. The fix ensures that a new request_id is always generated for server-initiated requests.

✨ Changes Made

• Updated send() to guarantee that server-initiated requests always generate a valid request_id.
• Replaced RwLock with tokio::sync::watch in set_client_details() for more efficient state updates.
• Added a new wait_for_initialization() function that allows awaiting the completion of the server initialization process (when used).