Chicken spawn egg uses incorrect item texture

Chicken egg is using turtle spawn egg instead (see image.png)

Steps to re-produce:
1. Create a new world in the latest preview, make sure experimental features of Next Major Update and Sniffer are turned on (this bug occurs once you toggle sniffer experimental features)
2. Go to your creative inventory and pick chicken spawn egg
3. Observed results: By comparing it to turtle egg and the chicken egg file in vanilla resource pack you will see that it is using turtle texture instead of chicken egg texture

Expected result:
Chicken spawn egg should use its correct texture whether sniffer toggle/experimental are turned on or off (grey & red)