[Caves & Clifs Experiment] Flowers generate incorrectly.

Issue :

Flowers generate incorrectly.

How to reproduce :

1. Generate a world with :

Seed: 1669320484

Caves & cliffs experiment : enabled

2. tp to -105 64 -986

3. You'll find that some flowers generated above lava and air

Expected results :
All the flowers generate on land

Observed results :
Some flowers generate on lava and some floats on ait