FindLibHaru, FindFreeType: handle multi-config library variables
select_library_configurations
makes a list in the _LIBRARY
variable
if both are found. This does not work well with
vtk_detect_library_type
. Fix these modules to detect the type for each
library and use UNKNOWN
if they are not both the same.
Fixes: #17895 (closed)
Cc: @Neumann-A
Backport: release