usually happens when u get ur car serviced from a service station maned by someone who love to service the corollas more than a merc...so they manage that water reaches places where none could able do ever before...
kindly be patient and let the condensation go away itself, ur camera is fine and in due course of time the blurry foggy white milky image will improve...
had the camera been fried ,the HU would have mentioned NO SIGNAL etc etc..
happened with me last month when i choose over enthusiastic and a bit sentimental guys towards corolla to service the cars...
they did excellent job in cleaning but the same issue came up in almost10 years of camera life..
being fed up, i left it as it is and it came back to life on its own after 3 4 days, working fine since then..Alhamdolillah