Maintain Group Membership When Repositioning Nested Objects

Currently, when multiple objects are grouped, moving an individual object within that group causes it to be removed from the group. This makes working with groups unnecessarily difficult, as even minor adjustments require users to manually ungroup and regroup the remaining objects afterward.

Instead, users should be able to reposition objects within a group while preserving the group relationship, allowing for quicker iteration and reducing unnecessary rework. This would make groups behave more predictably and better support common editing workflows.