Gravity blocks, item frames, paintings, signs, and banners can be placed on sculk veins

The Bug

Gravity blocks, item frames, paintings, signs, and banners can be placed on sculk veins. This is inconsistent with how similar blocks work, such as vines and glow lichens.

Steps to Reproduce

• Place a sculk vein.
• Place a gravity block, item frame, painting, sign, or banner on it. (Signs and banners have to be placed in a specific way; view the attached video to see how)

Observed Behavior

Gravity blocks, item frames, paintings, signs, and banners can be placed on sculk veins.

Expected Behavior

Gravity blocks, item frames, paintings, signs, and banners would not be able to be placed on sculk veins.