Below is a link to these two files, all you need to do is download the archive and place these two files in the following directory: (E: or C: disk)\Steam\steamapps\common\Scrap Mechanic\Data\Terrain\Database with the replacement of previous ones.
To check if it works just copy tiles from one of the following folders located along the path: "Scrap Mechanic\Survival\Terrain\Tiles" (For example, copy ALL files from folder named "poi")
To the "Scrap Mechanic\Data\Terrain\Tiles" path. After that, you can place these tiles in the world editor.

Here a my result:
Link: https://drive.google.com/file/d/1QMNfEsaffjK716e3aNG4kMjeAvjPwRvP/view?usp=sharing

And yes. Note that the tile editor itself has such nonsense that the icons of survival terrain assets are not drawn, so the guide says that you need to copy ready-made tiles from one directory to another!