Issue description: My inventory was full and I shift clicked my 64k storage drive out of my portable grid and into my inventory, but since my inventory was full, it got deleted

What happens: Storage disk and all of its contents get deleted

What you expected to happen: Nothing to happen since my inventory was full and it can't move anywhere (when my inventory is not full it works normally)

Steps to reproduce:

1. Open portable grid with a full inventory
2. Shift-click the storage disk out
3. The disk will be gone (I tried it again to make sure)
   ...

Version (make sure you are on the latest version before reporting):

• Minecraft: 1.12.2
• Forge: 14.23.5.2854
• Refined Storage: 1.6.15

Does this issue occur on a server? [yes/no] > YES, it occurs on servers

If a (crash)log is relevant for this issue, link it here:

[pastebin/gist/etc link here]

What happens here is that the disk gets inserted into itself. Fixed this in my fork for 1.12.