When a vanilla damage type is blocked by a data pack, the server crashes when loading data packs.

How to reproduce:

1. In the singleplayer world list, click "Create New World."
2. Add the attached data pack (MC-273171.zip) in the data packs screen.
3. Create the world.

Expected result:

The game loads fine, but without the removed damage type.

Observed result:

The game crashes upon trying to load the data pack.