Purpur Pillar uses chiseled crafting recipe

Since its introduction in Java Edition 1.9 (snapshot 15w31a), the Purpur Pillar has consistently used the crafting recipe for chiseled blocks rather than the standard recipe for pillar blocks. This appears to be an oversight in the crafting recipe assignment

Steps to Reproduce

Launch the game in a version where Purpur Pillar exists.

Open the crafting table or recipe book.

Search for the Purpur Pillar recipe.

Observe that it uses the chiseled block crafting pattern instead of the pillar block pattern.

Expected Result
The Purpur Pillar should use the standard pillar block crafting recipe, consistent with other pillar-type blocks in the game.

Actual Result
The Purpur Pillar uses the chiseled block crafting recipe, which is inconsistent with its block type and other pillar blocks.