[MC-128424] Blocks generate inside shipwrecks

Blocks like sand, gravel, stone or dirt are generated inside shipwrecks preventing to enter the other room.

Seed: 3797540044910547845

/tp @s 86003.47 35.00 6331.64 -789.91 90.00

Seed: -1489124352054281455

/tp @s -652.31 43.00 990.64 -1443.60 42.90

/tp @s -635.30 48.00 306.42 -3322.51 85.65

/tp @s -637.47 50.00 311.70 -494.26 58.65

Seed : -8300275442758179407

/tp @s 565.48 49.00 -608.50 -2778.16 90.00