Doesn't e-mail when updates cannot be installed

[jan-kolarik]

This is a follow-up to rpm-software-management/dnf#1918.

We should implement this in dnf5 as well to maintain backward compatibility.

[kontura]

Based on the code I think this is working in dnf5 by default: https://github.com/rpm-software-management/dnf5/blob/main/dnf5-plugins/automatic_plugin/automatic.cpp#L412-L421

However I think we could add some tests or at least port rpm-software-management/ci-dnf-stack#1603 to dnf5.

Or do you mean that we should have an option for that so it could be disabled?

[jan-kolarik]

Thanks for info @kontura. I see we already have the CI tests for dnf4, so I will check the state in dnf5 and update the tests there accordingly.