Iron nugget texture hasn't been updated despite it's gold variant has

Iron nugget texture were supposed to be updated in Texture Update but it was forgotten. Only it's gold variant texture were changed. This creates a mismatch between iron and gold nuggets texture, where they both supposed to be related only with a 90 degrees rotation difference.

The iron nugget still uses the old nugget form texture, and it's color doesn't match the iron ingot color.