Named Evoker Fang isn't displayed their name on the death message

Steps to Reproduce:

1. Decrease your health to 1
2. Run the command: /summon evocation_fang a
3. See the death message

Expected Results:
You got: "<player> was killed by a using magic"

Observed Results:
You got: "<player> was killed by Evoker Fang using magic"