Disable (Greyout) updates that have upstream dependencies

[erkr]

When a system is not updated frequently, there will emerge a list of available updates.
When one tries to install an update that requires another update to be installed first, I saw this non informative error popping up: failed to call service update/install. connection lost. (Only in the log, there was information that I needed to update the supervisor first.)
I think that updates with upstream dependencies could by disabled / greyed out until the required upstream installs are performed.