Steps to reproduce:
1) Open attached project
2) Open BindingsScene
3) Select Planet GameObject
4) Observe custom UI Toolkit Drawer appears for the Temparature struct
5) Select Overrides > Planet Scripot and look at the window
Expected: custom UI Toolkit drawer is displayed
Actual: "No GUI implemented error" is displayed, because the window is implemented in IMGUI fully
Version: this will reproduce on any recent version but is really a problem for Unity 2022 where we would like to tell users custom property drawers and editors can now be built with UI Toolkit