Ocean ruins generated on land will have a water source above the chest

Ocean ruins generated on land will have a water source above the chest, this issue clones MCPE-36793.

Seed: -3974136197093481570
Coordinates: 9117 64 784

Steps to Reproduce:

1. Create a new world using the given seed.
2. Teleport to the given coordinates.
3. Locate a chest in the ocean ruins on land.

Observed Results:
There's a water source generated above the chest.

Expected Results:
Water source shouldn't generate above the chest.