The master alarm switch wrote AddWashSet_7/_0 without consulting
_add_wash_mask, so a device reporting a wider mask (AddWashSet_15) or a
non-numeric one had it truncated to three bits -- the write that mask's
own docstring rules out, while the per-moment switches already refused it.
Also corrects the washer_ww6500 golden docstring: the fixture carries no
/oic/d and the test passes no device_types, so the device is typed solely
by the WW consumer prefix in its description. A51 is not a board token,
which makes that the fragile route worth naming.
Marek Tyburec
51bce3c8cf