Description of problem: After running leapp preupgrade job template, /var/log/leapp/leapp-report.txt shows Inhibitor "Newest installed kernel not in use".
It means in order to run leapp-preupgrade template host need to reboot manually because this inhibitor is not fixable.

Version-Release number of selected component (if applicable):
Satellite 6.14.0
Leapp: 0.18.0-1.el8_8.2
Kernel: 4.18.0-477.13.1.el8_8.x86_64

How reproducible:
Not always, it happens sometimes

Steps to Reproduce:
1. Enable RHEL-8.8 BaseOS & AppStream repos, register rhel 8.8 host with satellite
2. Set rhel 8.8 release using "#subscription-manager release --set 8.8"
3. execute "#yum update -y" on host
4. install leapp tool using "yum install leapp-upgrade -y"
5. Run job template name "Run preupgrade via Leapp" and observe 'Leapp preupgrade report'

Actual results:
Job template 'Leapp-preupgrade' run successfully and Leapp preupgrade reports shows inhibitor "Newest installed kernel not in use"

Expected results:
Job template 'Leapp-preupgrade' run successfully and there should not be any inhibitor with High Risk Factor present.

Additional info:
Current kernel running version-
[root@ip-fqdn ~]# uname -r
4.18.0-477.13.1.el8_8.x86_64

available kernel versions-

1. rpm -qa kernel
   kernel-4.18.0-477.15.1.el8_8.x86_64
   kernel-4.18.0-477.13.1.el8_8.x86_64
   kernel-4.18.0-477.10.1.el8_8.x86_64

available kernel-core versions-

1. rpm -qa kernel-core
   kernel-core-4.18.0-477.10.1.el8_8.x86_64
   kernel-core-4.18.0-477.15.1.el8_8.x86_64
   kernel-core-4.18.0-477.13.1.el8_8.x86_64

In detail kernel-core
http://pastebin.test.redhat.com/1104099