CentOS Stream libdnf-0.73.1-5.el10.x86_64.rpm build is missing a support for RHSM. There is no run-time dependency on librhsm, comparing to RHEL build.

The reason is this condition in libdnf.spec:

%if 0%{?rhel} && ! 0%{?centos}
%bcond_without rhsm
%else
%bcond_with rhsm
%endif

Added in https://github.com/rpm-software-management/libdnf/pull/265.

I believe there is no reason for excluding the RHSM support from CentOS Stream, besides there is no use for it.