auto_pickup.sc stacks filled shulkerboxes (with the same items)

[KrystianJablonski-PS]

Describe the bug
When mining with auto_pickup.sc script enabled, filled shulkerboxes with the same of items in them are getting stacked together like empty boxes do.
This issue occurs even after the fix with stacks stopping at 2 for autopickup.sc in #391

To Reproduce
Steps to reproduce the behavior:

1. Prepare shulkerboxes with same type of items in them, eg. 3 boxes with stack of stone in each
2. Enable the autopickup.sc script
3. Mine the boxes
4. Filled boxes are not getting stacked together

Expected behavior
Boxes remain separated

Screenshots

Environment

• Carpet version: 1.4.147
• Minecraft version: 1.21

[KrystianJablonski-PS]

alternatively essentialCarefulBreak from EssentialAddons can be used, as it does not have this issue