Planks and Stone variants haven't been given separate definitions in blocks.json

A lot of blocks that used to be grouped together with the same block IDs have been split into their own unique IDs recently, and resource packs have been properly updated to accomodate that change.

However, the planks and stone variants did not receive the same treatment. Despite being split, their blocks.json definitions are still grouped together.

 

This is inconsistent and unintuitive for creators.