A dirty dairy frying pan with liquid in it was placed in a meat dink and sat there for a few hours. I don’t know if it was hot when placed there.
Just wash off the frying pan with soap in water that isn’t hot. The fact that the pan sat in the sink for a few hours is not long enough for it to absorb meaty taste, and we are not going to be worried maybe it was hot if you don’t know. There is a rule, called “ashzukei isura lo machzekinan”, we are not going to assume there is a problem usless we have reason to assume so.