Zombies with no AI still convert into drowned

Bug

When a zombie is spawned underwater without AI, it still turns into a drowned after a short amount of time. (This also similarly effects husks)

This is inconsistent with Piglins which do not convert to Zombified Piglins when they have NoAI:1b, see also MC-172077.
The zombie conversion should therefore be implemented in a similar way.

Expected Result

I expected the zombie to not turn into a drowned because it is supposed to not have any AI.

Actual Result

The zombie turned into a drowned as if it had AI.

Steps to Reproduce

1. Go below water with cheats enabled

2. Run the command

   /summon minecraft:zombie ~.5 ~ ~.5 {NoAI:1b}

   or

   /summon minecraft:husk ~.5 ~ ~.5 {NoAI:1b}

   ❌ Watch the zombie convert into a drowned/husk convert into a zombie