FarlandsTweaks 1.2 - SCG Extra Warzone generation disable

- Targets SCG Extra 3.1.2 ModTerrablender.registerBiomes().
- Prevents registration of the SCG Extra Overworld TerraBlender region.
- Keeps scgextra:warzone_biome itself registered so existing chunks/world data remain loadable.
- Existing Warzone chunks are unchanged; newly generated Overworld terrain no longer selects the Warzone region through SCG Extra.
- Preserves prior GBF/Fossil compatibility and Inventory outline safety fixes.
