Cave vines without glow berries drop a glow berry when mined using Silk Touch

Cave vines without glow berries will drop a glow berry when mined with a tool enchanted with silk touch. This does not happen on Java Edition, and it's also inconsistent with sweet berry bushes.

Steps to reproduce:

1. Place a glow berry under a block to make a cave vine without berries on it
2. Enchant a pickaxe with silk touch
3. In Survival Mode, break the cave vine with the silk touch pickaxe

Observed Results:

The cave vine drops a glow berry when broken.

Expected Results:

The cave vine should break and drop nothing, which is the current Java Edition behavior.