[Bug] dupe via the interdiction matrix

[grahamfoxrollup]

Describe the bug
When using the interdiction matrix module that kills players, it incorrectly duplicates the player's inventory. The module places the player's inventory into a chest as intended, but also drops a duplicate of the inventory on the ground.

To Reproduce
Steps to reproduce the behavior:

1. Place the interdiction matrix block.
2. Right-click to open the interdiction matrix menu.
3. Activate the module that kills players.
4. Observe that the killed player's inventory is both placed in a chest and duplicated on the ground.

Expected behavior
The expected behavior is for the player's inventory to only be placed in the chest without any duplication occurring on the ground.

System Specs
forge 47.2.18
MC 1.20.1
MFFS 5.1.9

Additional context
This bug appears on the surface to be a incompat with the Corpses mod (a gravestone alternative).