The problem might come from the C:\Users\%USERNAME%\AppData\Local\Autodesk\3dsmax\2022 - 64bit folder. When Max runs in the interactive mode, it creates a file Plugin.UserSettings.ini, which contains the path to the Max "plugins" folder (where Forest Pack & RailClone plug-ins are installed). In this way (the Max 2022 path may be different in your case):
Additional MAX plug-ins=C:\3dsmax2022_64\3ds Max 2022\PlugIns\
It seems when Max is launched in some other way - like by Deadline in the render mode, this file is not created, and plugins stored in the path are not loaded.
How to fix it:
Delete the folder C:\Users\%USERNAME%\AppData\Local\Autodesk\3dsmax\2022 - 64bit from render node, where %USERNAME% is the Windows user which runs the job.
Launch at least one render.
When 3ds Max is launched, it should create the folder mentioned above. If it doesn't exist, please double-check that the %USERNAME% name is correct.
Once you check that folder exists, copy the file Plugin.UserSettings.ini from one of your workstations.
I hope that helps.