Big and small dripleaf stem models are not double-sided

Big and small dripleaf stems are still not double-sided, despite most cross models having been fixed in 1.21.70.20 to be double-sided.

This causes them to look incorrect from the east and west.

Bedrock Edition

Java Edition

Expected Result

The big and small dripleaf have double-sided stems, like Java Edition.

Observed Result

Big and small dripleaf stems are not double-sided.