Biome property not updating

[ThatForkyDev]

Describe the issue
Default biome property not functioning correctly

Spigot version
1.20.2

Plugin version
2.10.0

How to reproduce
Import a world, I did a nether one so your biome is going to be crimson_forest or similar, then fly out, and after you're out of the render distance it will show it as plains which removes all the effects from being in the nether.

This was based off the property map in worlds (templates)

Upon loading I also tried the following

    private final Map<Environment, String> biomes = new HashMap<>() {{
        super.put(Environment.NORMAL, "minecraft:plains");
        super.put(Environment.THE_END, "minecraft:the_end");
        super.put(Environment.NETHER, "minecraft:crimson_forest");
    }};


//method
try {
            if (this.mongoLoader.isWorldLocked(key)) { //big sad
                this.mongoLoader.unlockWorld(key);
            }

            final SlimePropertyMap slimePropertyMap = new SlimePropertyMap();
            slimePropertyMap.setValue(SlimeProperties.DEFAULT_BIOME, this.biomes.get(environment));
            slimePropertyMap.setValue(SlimeProperties.ENVIRONMENT, environment.name());

            final SlimeWorld slimeWorld = this.slimePlugin.loadWorld(this.mongoLoader, key, false, slimePropertyMap);
} //catch clauses

[kyngs]

As far as I know, SWM doesn't really support biomes? @Paul19988