Why Leapp upgrade fails with "Possible problems with remote login using root account" inhibitor?

Issue

• Encountered below error while attempting leapp upgrade from RHEL 8 to RHEL 9.

  Risk Factor: high (inhibitor)
  Title: Possible problems with remote login using root account
  Summary: OpenSSH configuration file will get updated to RHEL9 version, no longer allowing root login with password. It is a good practice to use non-root administrative user and non-password authentications, but if you rely on the remote root login, this change can lock you out of this system.
  Remediation: [hint] If you depend on remote root logins using passwords, consider setting up a different user for remote administration or adding a comment into the sshd_config next to the "PermitRootLogin yes" directive to prevent rpm replacing it during the upgrade.