Hide Godot transform gizmo

[stefan-s29]

The Godot transform gizmo is currently not being hidden while using Cyclops, which makes it overlap with the Cyclops gizmo.

There is a workaround, as the gizmo is hidden when selecting Show List of Selectable Nodes (as suggested in this thread: https://github.com/blackears/cyclopsLevelBuilder/discussions/190). However, the highlight of the square icons does not work when you use that. If hiding the transform gizmo as a whole is not possible for now, fixing the square icons would at least improve the workaround.