Unused pixels in chorus plant and chorus flower textures

Relates to: MC-176095 MC-199660 MC-208679 MC-250985

May also relate to: MC-159560

The bug

In both the vanilla textures and Programmer Art, the four 2×2 regions at each of the corners of the "chorus_flower.png", "chorus_flower_dead.png" and "chorus_plant.png" textures go completely unused by the models.

How to fix

An easy fix - just replace the vanilla "chorus_flower.png", "chorus_flower_dead.png" and "chorus_plant.png" texture files with the versions attached, and replace Programmer Art's "chorus_flower.png", "chorus_flower_dead.png" and "chorus_plant.png" textures with the fixed Programmer Art textures attached as well.