kio-open: Special-case thunderlinks
They often are shipped with 2 // making the payload of the links the hostname which, per-spec, is case insensitive and thus QUrl leverages this property. This breaks thunderlinks because they encode information in the link that is case sensitive. If we put it at the path section, then they seem to work fine.
Marked as draft because it needs testing, couldn't reproduce properly locally
Seems to work, no drawbacks known.
Edited by Aleix Pol Gonzalez