Monsters don't spawn in proper light levels when changing them via a datapack.

How to reproduce:

• Create a datapack and alter the "dimension_type" (for example: "overworld.json") to the following values:

...
"monster_spawn_block_light_limit": 15,
"monster_spawn_light_level": {
    "type": "minecraft:uniform",
    "max_inclusive": 15,
    "min_inclusive": 10
},
...

• Load into the game and set up a lit area with light level 10+ under the sky.

Result: monsters don't spawn in that lit area

Note: the monsters will still spawn in light levels below 7 or lower if the area isn't under the sky.