When I opened up Minecraft and downloaded the new snapshot (i was playing a nether survival challenge) Zombified piglins looked normal and had the updated texture for these snapshots. When i logged into my world the next time, however, (i had not closed out of Minecraft, just the world) the texture of the zombified piglins was completely white. I exited out of MInecraft and that seemed to solve it. Apoligies, i did not think of getting a screenshot at the time.