OS: Win, macOS

The Windows and macOS SerialDeviceEnumerator subclasses each have two methods for enumerating ports on the system. The difference between the set of devices returned by them is tracked by the Hardware.Serial.NewMinusOldDeviceListSize histogram. This histogram reports that while on the majority of user systems these old and new methods return the same data there are a significant number of cases where they do not.

This issue tracks investigating these differences and resolving them so that the old enumeration logic can be removed.