Make the shattered savannah a lusher green again

On Minecraft Bedrock there was a long-standing disparity with Java where the shattered savanna biome had bright, vibrant green foliage and grass; this was changed with 1.19.40 because it had been reported as a bug. (https://bugs.mojang.com/browse/MCPE-34936)

I suggest that this be reverted because a) the feature was around for so long, meaning the recent change was more a disruption than a fix, and b) because it enhanced the shattered savanna as a biome.