Biomes You'll Go Fixed

Stability and compatibility update based on the 1.8.0.1 source baseline:

• Fixed BYG leaves/logs to behave like proper Forge tree blocks, including leaf decay, fire behavior, shearing, sapling drops, and Passable Leaves/RLFoliage compatibility.
• Fixed many broken worldgen references, sapling templates, structure palette entries, flower generation no-ops, and Jacaranda Forest log-only trees.
• Improved chunk generation performance and reduced cascading worldgen problems without clipping structures at chunk borders.
• Fixed major interaction bugs with doors, gates, slabs, plant placement, bonemeal growth, glowshrooms, berries, Rudo, baobab, reeds, and cattails.
• Added native RLFoliage support for BYG grass-surface blocks.
• Fixed log-to-charcoal smelting parity and a few incorrect recipes.
• Fixed BYG creative tab search bar overlap.
• Preserved existing block IDs, item IDs, biome IDs, registry names, assets, and save compatibility.