Short and Tall Dry Grass in /shop

The server is well past Java Edition 1.21.5 (which is when these two decoration-related blocks were added), and far more blocks and items have been added to the game since (some also present in /shop). It surprises me that there's still no way to get Short Dry Grass or Tall Dry Grass even through /shop considering Light Blocks (which normally can't be obtained in survival) are also available there. Doing so would also allow for there to be more ways of decorating desert/badlands-themed builds.