[Fedora-packaging] Does every package which provides a library requires to provide unversioned copy of the library?

I have a question raised from an ongoing review process [1]: does every package which provides a library requires to provide unversioned copy of the library? Here the libpasraw library only provides versioned copy of the library. It's just a private library which is used only by other projects from the same author which require the library only at runtime. The reviewer asks me to patch the source code to provide an unversioned copy of the library and release it in a -devel subpackage. Is it mandatory to provide an unversioned copy of the lib? Mattia [1] https://bugzilla.redhat.com/show_bug.cgi?id=1813563