As discussed in https://emacs.stackexchange.com/questions/71774/pass-default-value-to-org-set-property/71777, providing a default to org-set-property does not always work.
It calls `org-read-property-value`, which only uses the supplied default value if it can compute a list of allowed values for the property. But then, the default value has to be part of that `_ALL` list. Can this be changed so it always uses the given default? Thanks everyone for the great work! ~ Janek
