This is a clone of issue OCPBUGS-34181. The following is the description of the original issue:
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In the agent installer, assisted-service must always use the openshift-baremetal-installer binary (which is dynamically linked) to ensure that if the target cluster is in FIPS mode the installer will be able to run. (This was implemented in MGMT-15150.)

A recent change for OCPBUGS-33227 has switched to using the statically-linked openshift-installer for 4.16 and later. This breaks FIPS on the agent-based installer.

It appears that CI tests for the agent installer (the compact-ipv4 job runs with FIPS enabled) did not detect this, because we are unable to correctly determine the "version" of OpenShift being installed when it is in fact a CI payload.