Poke Isles sea-level-88 compatibility patch v3

Keeps overworld sea_level at 88.
Adds a Cherry Plains plateau lift in Fantastic Worlds offset density for climate bands matching LegendaryMonuments cherry_plains: continentalness >= 0.30, erosion -0.95..-0.15, temperature -0.30..0.80, vegetation -0.60..0.70.
This preserves the LegendaryMonuments cherry_plains biome instead of disabling it.
