Sculk drop xp after breaking them with Silk Touch

Summary:
Sculk drop xp after breaking them with Silk Touch.

Steps to reproduce:

1. Enchant a hoe with Silk Touch.
2. Place a sculk.
3. Switch to Survival mode.
4. Mine the sculk with the hoe.

Observed results:
The sculk drop themselves and experience.

Expected results:
The sculk should only drop themselves.

Original description:

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how to reproduce: mine sculk with a silk touch tool