The eyes of creakings aren't visible when creakings have the invisibility effect

The Bug:

The eyes of creakings aren't visible when creakings have the invisibility effect.

This behavior is inconsistent with other entities such as spiders, phantoms, and endermen.

Steps to Reproduce:

1. Summon a creaking and splash a potion of invisibility on it.
2. Observe if the eyes of the creaking are rendered.

Observed Behavior:

The eyes of creakings aren't visible.

Expected Behavior:

The eyes of creakings would be visible.