[MC-220069] Wither/creeper armor is no longer affected by the fog from powder snow/lava

Wither/creeper armor is no longer affected by the fog from powder snow/lava.

Summon a powered creeper inside a large area of powder snow/lava
```
/summon minecraft:creeper ~ ~ ~ {NoAI:1b,powered:1b}
```
→ Notice how you can clearly see the creeper's armor
Summon a wither with wither armor inside a large area of powder snow/lava
```
/summon minecraft:wither ~ ~ ~ {NoAI:1b,Health:150f}
```
→ Notice how you can clearly see the wither's armor

Note: This issue did not occur in 21w08b.