Hello Kunal,
From the perspective of the SRX, there can be only two possibilities : Tunnel is either down or Up.
So the configuration provided should suffice.
If I understand correctly, what you mean by Hung State is a state where VPN is up but not passing traffic. Is that correct?
These situations are need to be investigated & made sure that such situations do not happen frequently as it points to misconfiguration or interoperability issue not fixed by workaround etc.
Regards,
Rushi