Description of problem:
When installing OCP with host groups, if "VM/Host Groups
" is not configured on vSphere, installer should validate it and report error, but now the install passed with nodes land on the wrong hosts.
 
Version-Release number of selected component (if applicable):

4.19.0-0.nightly-2025-04-02-170034

How reproducible:

always

Steps to Reproduce:

1. Install cluster with host groups on vSphere where "VM/Host Groups
" is not configured
2. Install cluster and check nodes host

Actual results:

install passed with nodes land on the wrong hosts

Expected results:

installer should validate if "VM/Host Groups" is configured

Additional info:
slack discussion: https://redhat-internal.slack.com/archives/G012C6LKVM2/p1743760558696689