Render issue with the chest plate arms, they are not mirrored.

Partner Rank: 3

Summary:
Render issue with the chest plate arms, they are mirrored instead of using the correct arm texture render for both arms.

Verification builds and Platforms:

Beta 1.13.0.1 release 2487972 Win10

Impact:
Armor arm textures are wrong.

All Maps where armor textures are retextured: City Living, Monster of the Deep, Monster from the Ice, etc ...

Repro Steps:

Create a Creative world and give yourself Diamond armor

Observed Results:

Observer that the chest plate arm textures are not mirrored.

Expected Results:

The chest plate arm textures are mirrored.

Screenshots/Videos attached: Yes