Description of problem:

Using dnf rollback on a transaction with a group upgrade in it causes issues when dnf tries to downgrade the group since downgrade isn't a valid group action.

Version-Release number of selected component (if applicable):
dnf-4.4.2-11.el8.noarch
libdnf-0.55.0-7.el8.x86_64


How reproducible:
Always 

Steps to Reproduce:

1. Release lock to get an older version of a group installed (for my testing I used 8.2)
2. Install a group. I used the "Security Tools" group, but it's reproducible with all groups:
   # yum group install 'Security Tools'
3. Upgrade the group:
   # yum group upgrade 'Security Tools'
4. Attempt to rollback, with <id> as the id before the group upgrade:
   # yum history rollback <id>


Actual results:

[root@e4e271df66fb /]# yum history rollback 3
Last metadata expiration check: 0:01:15 ago on Tue Oct 19 18:16:03 2021.
Error: The following problems occurred while running a transaction:
  Unexpected value of group action "Downgraded" for group "security-tools".


Expected results:
yum should have the ability to downgrade groups, or it should properly handle this so that the group is removed and packages are downgraded, then the group is marked installed again.

Additional info:
I got different behavior when using the deprecated 'groupupdate' syntax on the update of the group. On one occasion it threw a traceback, on the other occasion it actually removed the group and downgraded the package which is the closest to desired behavior, but still not perfect because it results in the group not being marked installed. 

There is the workaround of marking the group removed, downgrading the packages, and marking it installed, but it should not be the case that a 'yum history rollback' causes this issue in the first place, and ideally yum group would have downgrade as a valid action instead of just the following three actions:

---
534                 if action == "Install":
535                     self._swdb_group_install(group_id, pkg_types, group_data["packages"])
536                 elif action == "Upgrade":
537                     self._swdb_group_upgrade(group_id, pkg_types, group_data["packages"])
538                 elif action == "Removed":
539                     self._swdb_group_remove(group_id, pkg_types, group_data["packages"])
540                 else:
541                     errors.append(TransactionError(
542                         _('Unexpected value of group action "{action}" for group "{group}".')
543                             .format(action=action, group=group_id)
544                     ))
---
~~~

Additional info: