9.4.0 battle crash

## Description
Game crash on opponent faint or catching in battle

## How to reproduce
Steps to reproduce the behavior:
1. Must be in battle
2. Complete battle by fainting or catching Pokémon
3. Game crash

## Context
Pixelmon Version: 9.4.0
PixelTweaks Version: 3.0.8
Server or Single Player: Single

Additional Context:
Neoforge 21.1.248, MC 1.21.1