hit_block enchantment effect does not work on arrows

The hit_block enchantment effect does not work on arrows, despite working on bows as normal.

Steps to Reproduce

1. Install the attached data pack.
2. Run the function hit_block:give.
3. Fire the Explosion enchanted arrow with a normal, unenchanted bow. It will not explode upon impact.
4. Fire a new (unenchanted) arrow with the Exbowsion enchanted bow. The arrow will explode upon impact.

Expected

The two enchantments are identical, so the arrow fired in step 3 should be exploding.