abstract_space_time_dataset: use keyword arguments in calls to get_registered_maps

[ninsbl]

Calling get_registered_maps_as_objects may fail, depending on the arguments provided. This PR backports a fix in how the underlying get_registered_maps method is called.

See also: #3798

[echoix]

Since 8.4 isn't even out yet, is there a real issue to hold it back?

[ninsbl]

Since 8.4 isn't even out yet, is there a real issue to hold it back?

Not from my side. I just don`t want to interfer with the release process or cause more delay because a new RC might needed...

[echoix]

@neteler I'm letting you decide to merge now or later, but if it's later, can you mention it so I don't think that the PR is forgotten if it ends up unmerged for too long?

[neteler]

To be honest, I cannot judge this one.

[echoix]

To be honest, I cannot judge this one.

That's why I only need you to decide when to merge the backport, the contents is fine

[neteler]

Since it is marked 8.4.1 we still have to wait that 8.4.0 gets out of the door. See related discussion on grass-dev.

[echoix]

Since it is marked 8.4.1 we still have to wait that 8.4.0 gets out of the door. See related discussion on grass-dev.

8.4.0 is out, so it is ready now?

[neteler]

From the release management perspective: yes

[echoix]

Since there were no objections in at least 4 days after the last comment, I'm taking the liberty to merge