Japan island map 1.3

Fixed 2 corrupted city meshes that got corrupted in 0.35 update. Thanks to passengerpigeon for reminding me.

• update info:
  • fixes:
    • fixed some clipping folliage
    • fixed missing material
    • fixed blurry road markings and decals
    • fixed cherry blossoms visibility from afar
  • optimization:
    • added occlusion volumes which might slightly increase performance and stability
    • replaced water blocks with rivers which might increase stability
    • slightly optimized water reflections
    • foliage LOD's improved, should look better and perform better
    ...

Fixed Tree leaves clipping highway at certain parts