[MC-214782] Geodes can generate floating in caves

Now that caves are bigger, geodes can generate fully exposed and floating.

Seed: 6927193748404355117

/execute in minecraft:overworld run tp @s -203.49 -45.75 673.60 479.19 0.00

/execute in minecraft:overworld run tp @s -80.75 -41.63 691.62 138.31 -0.83

/execute in minecraft:overworld run tp @s 10699.16 -31.75 1486.96 -832.87 -9.10

/execute in minecraft:overworld run tp @s 10751.72 -27.26 1482.98 -831.02 30.61