I’ve heard tell of such things… priests I know have shared some very interesting stories. The Church historically does not address issues until a major question is raised. The issue about women and Holy Orders was never really settled until women and supporters of women’s ordination started making noise.
And once again Intersexuals are not all “created equal” There is a broad spectrum from those who look almost entirely female, but have micro male organs, and those who look and junction as male, but have female organs that are almost undetectable. As they can “function” in the role their predominant external sexual appearance, and in some cases even reproduce, there should (I would imagine) be less of a problem with them than with someone who has ambiguous or has “equal” parts of both genders.
Having access to the theological powerhouses at BU you may be in a better place to ask Jon.