Nether stars in suspicious sand and suspicious gravel are not explosion-proof

Nether star item entities have the unique property that they are explosion-proof. This however does not apply if a nether star is buried in suspicious sand.

To reproduce

1. Run this command:

   /setblock ~ ~ ~ minecraft:suspicious_sand{item:{id:"minecraft:nether_star",Count:1b}}

2. Place TNT near the suspicious sand and interact with it with a flint and steel

Observed result

The nether star inside of the suspicious sand is explosion-proof and drops .

Actual result

The nether star does not drop.