top level layers should not allow transformation

[kfarr]

suggestion to create a new data attribute "data-no-transform" whose existence on an entity shall indicate:

• no transform controls should display to the end-user (no transform helpers for move, scale, rotate)
• in the right-hand panel, vec3 values should be read only / disable

why? transformations to these layers will not be saved. some users may modify them by mistake. these are rebuilt or populated with ugc upon load therefore transformations will not be saved.

these 4 top layers: