https://github.com/Team-RTG/Realistic-Terrain-Generation/blob/1.10.2-master/src/main/java/rtg/event/EventManagerRTG.java#L223-L228

RTG should just log a warning here instead of patching the biome and handover the sapling growth to the vanilla logic.

This will prevent situations like #1080 from happening in rare edge cases.

Fixed for 1.10.2 in 72a502a

This should be an easy port to 1.7.10

Fixed for 1.8.9 in 55b66dd