Fix Two By Two Advancement Showing Strange Results

[ochotonida]

This PR fixes a few issues with the breeding and taming challenges, as pointed out in #3173.

• Added deer, ducks, slabfish and yaks from environmental to the breeding advancement, and slabfish to the taming advancement. Normally, environmental already handles this, but it doesn't seem to be counting correctly with the custom advancement. Adding these manually fixed this.
• Added gorillas, grizzly bears, roadrunners and gazelles to the taming advancement. The book from Alex's mobs didn't mention these as breedable, so I assumed they weren't.
• Added rattlesnakes to the taming advancement. Not sure how I skipped over this one tbh.
• Added crows to the taming advancement, there used to be an issue where taming crows wouldn't trigger the advancement but this has been fixed in a recent Alex's mobs update.
• Removed bald eagles from the breeding and taming advancements. Bald eagles are disabled, which I missed.

[NielsPilgaard]

Nice work!