cancelRequested

Fired when |SCardCancel| is called.

This maps to: PC/SC Lite: https://pcsclite.apdu.fr/api/group__API.html#gaacbbc0c6d6c0cbbeb4f4debf6fbeeee6 Microsoft: https://learn.microsoft.com/en-us/windows/win32/api/winscard/nf-winscard-scardcancel