[Issue 19471] Duplicate error messages when trying to use an inaccessible package symbol

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19471

--- Comment #2 from Mike Franklin <slavo5150 at yahoo.com> ---
`-transtion=import` was implemented with the fix for issue 10378.

I don't know if the compiler is transitioning to the behavior of the current
compiler implementation, or transitioning away from the current implementation
to the behavior in `-transition=import`.

--