Fire Resistance doesn't work for lava inside cauldron

Summary:
When a strider or a player with Fire Resistance stands inside a cauldron with lava, the player/strider still takes damage from the lava.

Steps to Reproduce:

1. Place a cauldron.
2. Place lava inside the cauldron.
3. Drink a Fire Resistance potion.
4. Stand inside the cauldron in Survival mode or spawn a strider/blaze/zombified piglin inside the cauldron.

Observed Results:
The player/strider takes damage from the lava.

Expected Results:
The player/strider should be immune to the damage from the lava.