use proper ShowMapping options for DifferentNames task variants

[guard-who]

close #614

[guard-who]

For task2025_21, is it also meaningful to print CD? Because it only shows a scenario description instead of a CD, I think that printing CD may help students bridge the association between the description and the OD. In other words, should we add an option of printing both CD and OD?

[jvoigtlaender]

Yes, probably in task2025_21 both class and object diagram should be printed, with the injected concept names.

And maybe even for task2025_22 one could argue that it would make sense to at least have the option of also printing the according class diagram in the feedback. In the sense of: "this could have been the underlying model".

A more general question arises here of whether even after these enhancements, the feedback texts for these two types of task would be fully appropriate. That is, whether the text printed by differentNamesEvaluation makes sense for these task variants.

Adapting those texts would probably only be possible by using flex-tasks configuration, since one really needs to "dynamically change the code", not just change stuff in the stored instances.

But this should probably be dealt with in a separate issue.

[jvoigtlaender]

Within the issue here, maybe even for task2025_13 and task2025_14 a switch from ShowMapping to ShowMappingAndReprintOD would be reasonable, since even for the fully artificially named instances, it is probably easier for students (when trying to understand why the printed solution is the correct one) to compare a relabelled OD to the given OD then to mentally have to relabel the OD with the printed correct mapping on their own in order to check it against the original CD.

Probably the text in

modelling-tasks/src/Modelling/CdOd/DifferentNames.hs

Lines 641 to 644 in b293f87

	ShowMappingAndReprintOD -> do
	paragraph $ translate $ do
	english "Compare with the correctly labeled object diagram:"
	german "Vergleichen Sie mit dem korrekt beschrifteten Objektdiagramm:"

should be slightly adapted then, to not talk of "Compare ...".