By "the" wireless charger, if you're referring to the 2017 Samsung Convertible Charger, the overwhelming majority of cases are compatible.
You can find videos on YouTube of people testing a range of cases and wireless charging for the S8. Expect similar compatibility for the Note 8.
Even Google searching a specific case + wireless charging, or reaching out to the manufacturer are viable, easy options.
The biggest issues with wireless charging I've seen across the board are when people using a case with a metal plate attached to it (to use with a magnetic car mount), as it affects the connectivity.