[BUG] FluidTank crashes game if it has non-existant fluid

[jollycar]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

If a fluid is removed from the game, a FluidTank in your inventory trying to render the old fluid crashes the game.

Related to #382

https://gist.github.com/jollycar/f72b822957922a1bf285c3714454201c

Expected Behavior

Empty the FluidTank and not to crash the game

Steps To Reproduce

1. Add an existing fluid to a FluidTank
2. Pick it up as an item in your inventory
3. close game
4. remove the fluid from the game
5. start game
6. when trying to open your inventory (e), the game crashes

Environment

- OS: Linux
- Java version: 17
- Minecraft version: 1.20.1
- Version: 52c3ff55146b9d63b0660b8956a0ee064e08ff4a

Anything else?

No response

[justliliandev]

this is a somewhat similar issue, except that here the check if the fluid isn't present isn't right: link
this should also contain a check if the fluid is empty, do you wanna get on it, or should I?

[jollycar]

@agnor99 you seem to have an idea how to fix this, go ahead. I haven't done anything for this yet.