Add new model group settings bug

Title

When adding a new model group after previously adding one, it copies the name of the group and the added models and sets it as default.

Steps to reproduce the bug

Click Edit Graph.
Go to the Models Section.
Add a new group with name e.g. Test123 and e.g. all refC2 models.
Add another group.

Resulting and expected behaviour

Resulting behaviour: It copies the name (here Test123) and the models (here refC2) and sets it as default for the new group.
Expected behaviour: It should leave the name empty and also the list of added models. It should look same as when adding the first new group.

Screenshots / screen recordings

When adding the first model group:


When adding the second model group:

Technical Data

pass

System Information [if necessary]

pass

Impact [If known]

pass