See https://canary.discord.com/channels/790151253144895508/816717231152037889/1404033608963850343

Add a tag for preventing pulleys and rope pulling from moving blocks. Possibly also support #c:relocation_not_supported. Currently only checks for hardcoded vanilla checks, push reaction and can_support.

Reason: I have a block that sticks to itself only and i want it to move as a unit (using pistons) and pulleys are capable of violating that, similar reasoning could be made for multiblocks of other mods

done, logic now first fallsback to vanilla piston push blacklist, then checks a tag which contains that relocation_not_supported list