Plugin worlds ignores data pack settings

Expected behavior

Setting cloud_height, natural, ambient_light and other settings described in https://minecraft.wiki/w/Dimension_type will apply to the corresponding world which is loaded by plugin via Server#createWorld.

Observed/Actual behavior

The JSON file is just ignored.

Steps/models to reproduce

Create a data pack which contain data/minecraft/dimension_type/test_world.json file.
Load a custom world w/ namespaced key minecraft:test_world using Server#createWorld (WorldType = NORMAL, Environment = NORMAL).

The World will load, but all settings from JSON file is just ignored.
But if you rename the file to overworld.json, then everything from it applies to main world w/o issues.

Plugin and Datapack List

Only test plugin which calls Server#createWorld and test data pack which contains valid JSON dimension_type file.

Paper version

Paper 1.21.8-60

Other

I'm not completely sure if this is a bug, but it will help me a lot if anyone can figure out this bug and fix it...
Thank you in advance for your time.

Start at the Server#createWorld entry point and trace how a namespaced dimension_type such as minecraft:test_world is resolved when the world uses NORMAL type and environment. Compare that path with the working overworld.json case and verify the data pack at data/minecraft/dimension_type/test_world.json is read. Done means the JSON settings apply to the custom world created by the plugin.