Findrek's 3D Buckets and Fish

• Fixed versions 25w45a and onwards breaking how the items are rendered, it's now compatible again.
• Made backwards compatible with versions down to 1.21.5

Previous features not supported yet:

• Buckets of axolotl don't display if it's a baby or low on health.
• Buckets of lava don't glow.

Until Optifine or Minecraft itself add compatibility again for these features, not much can be done for the time being.