[1.21.4] Regression in the effects of modded fluids on entity movement.

[bconlon1]

Minecraft Version: 1.21.4

NeoForge Version: 21.4.50-beta

Logs: N/A; Code:

• https://github.com/The-Aether-Team/The-Aether-II/blob/1.21.4-develop/src/main/java/com/aetherteam/aetherii/block/AetherIIFluidTypes.java
• https://github.com/The-Aether-Team/The-Aether-II/blob/1.21.4-develop/src/main/java/com/aetherteam/aetherii/block/fluid/AcidFluid.java

Steps to Reproduce:

1. Create and register a custom fluid that does not incorporate any custom movement effects.
2. Jump into the fluid.
3. Notice the player will sink to the bottom immediately and their movement will behave as if they aren't in any fluid; except they are prevented from jumping notably.

java_K9RkEHHrMs.mp4

Description of issue:
It seems like there's been a regression in custom fluid behavior between 1.21.1 and 1.21.4. I believe the difference is in that this patch code from 1.21.1 moved to the LivingEntity#travelInFluid method in 1.21.4, but a patch has not been added here to LivingEntity#travel before the new travelInFluid method is called: