The game version is 1.21.8, only the fabric api version 0.129.0 is installed.

There is only one datapack in the world, here is its content:
Ench-Filter-Test > pack.mcmeta —

{
    "pack": {
        "description": "by §6Antoha256M",
        "pack_format": 81,
        "supported_formats": [
            48,
            83
        ]
    },
    "filter": {
        "block": [
            {
                "namespace": "minecraft",
                "path": "enchantment"
            }
        ]
    }
}

Another thing I noticed during the tests is that if you don't specify the namespace, there will be no safe mode.

{
    "path": "enchantment"
}

But the goal is to disable only vanilla enchantments.

I also attached a log with the launch of the game and the entrance to the world.
latest.log

This doesn't validate in vanilla, either. Required tag entries being missing causes datapacks to fail to validate in 1.21.6+, meaning you must remove all enchantment tags (both minecraft and c-namespaced ones).