Iron golems built by players don't drop carved pumpkins upon being killed

The Bug:

Iron golems built by players don't drop carved pumpkins upon being killed.

Steps to Reproduce:

1. Build an iron golem.
2. Kill the iron golem and observe the loot it drops upon death.

Observed Behavior:

No carved pumpkin is dropped.

Expected Behavior:

A carved pumpkin would be dropped.