nats aio client request using _request_new_style doesn't receive messages if it looses the subscrption

[ricardomfmartins]

Observed behavior

On the following code if the subscription is lost, the instantiated client will no longer be able to receive the replies of any request because the subscription is not recreated.
This behavior wasn't happening on the old style request.
`async def _request_new_style(
self,
subject: str,
payload: bytes,
timeout: float = 1,
headers: Optional[Dict[str, Any]] = None,
) -> Msg:
if self.is_draining_pubs:
raise errors.ConnectionDrainingError

    if not self._resp_sub_prefix:
        await self._init_request_sub()
    assert self._resp_sub_prefix`

Expected behavior

if a subscription is lost a new one should be created.

Server and client version

https://github.com/nats-io/nats.py/releases/tag/v2.9.0

Host environment

No response

Steps to reproduce

I wasn't able to reproduce how I lost a subscription, but it already happened on some of our clients.