Issue Description:

The mod causes the game to crash when run on a dedicated server.

What happens:

The game crashes, throwing a java.lang.RuntimeException: Cannot load class net.minecraft.client.util.InputUtil$Key in environment type SERVER.

What you expected to happen:

The mod to either be disabled, or to not do anything on a dedicated server.

Steps to reproduce:

1. Clone the repository at hash dd4b75a (Release 2.1.0 beta 2)
2. Run the Minecraft Server run configuration in IntelliJ

Affected Versions (Do not use "latest"):

• ShulkerBoxTooltip: 2.1.0-beta.1+1.16-pre2
• Minecraft: 1.16-pre2 and 1.16-rc1
• Fabric Loader: 0.8.7+build.201 and 0.8.8+build.202
• Fabric API: 0.11.7+build.356-1.16 and 0.12.5+build.367-1.16
• Other mods (if relevant): Auto Config 3.2.0-unstable in dev environment

Your most recent log file where the issue was present:

latest.log

Should be fixed now!