cid not appended to action URLs if there is already a parameter with a name ending with "cid"

FacesUrlTransformer looks for "cid=" in the action URL without checking word boundary.
PrimeFaces' Dialog Framework has its own context propagation, to that end it adds a "pfdlgcid=..." parameter.
FacesUrlTransformer sees "pfdlgcid=" and thinks that it doesn't need to do anything, thus breaking CDI conversation propagation.