You might wonder how this fixes a problem with PulseIn, when the
changes aren't to any of those files! PulseIn is implemented in terms of
StateMachine, which had some assumptions about the relation between
the index of a pin object in mcu_pin_global_dict_table and its "pin
number". This was true, until some pins were removed from the
microcontroller module on Pico W.
Closes: #7078
Dan Halbert
Jeff Epler
Lucian Copeland