I am wondering how probability is intended in classical physics. I have read a number of articles where it is said that probability in classical physics is generally intended in subjectivist terms as bayesian probability. But I am not sure if there is accordance among physicists' community and the philosophical one about this and if there are other relevant ways to intend probability in classical physics.
There is definitely not complete concordance among Physicists. Some insist on Bayesian interpretations of probability and others prefer the frequentist interpretation.
One definition of "subjectivist probability" is: "In probability, a subjectivist stand is the belief that probabilities are simply degrees-of-belief by rational agents in a certain proposition, and which have no objective reality in and of themselves."
I do not believe that many physicists condone this view of probability. A fair coin is a coin that, if flipped, has a 50/50 chance of coming down heads or tails. That is an actual physical description of the coin, independent of anyone's views. One can measure a coin's symmetries and determine how appropriate the word "fair" is as a description of a coin. This probability is an objective assessment of the coin.