This patch fixes the bug raised in T92268.
As listed in that bug report, the group output node did not have the same size padding as the group input, leading to the node looking different and actually being smaller.
No one's life was threatened by this bug, but it was an annoying UI papercut that this diff fixes. It works across any use of group nodes (Geometry Nodes, Compositor, Shaders, and so on).
| master | patch |
Changed reviewer from group as per ThomasDinges.

