Azalea top texture is mirrored incorrectly

For a comprehensive list of other examples of issues with 2D planes in models not being mirrored as expected, click here.

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The bug

The plane composing the top of an azalea does not mirror on the back as one would expect, resulting in physical/illogical weirdness.

How to reproduce

1. Place an azalea
2. View a specific section of the azalea top from above, for example the sort of L shape visible to the left from the underside
3. View the exact same section of that texture plane from the inside (best seen with night vision, due to MC-213804)
4. Note that the exact texture pattern at that position is different, even though it should be the same

Relates to MC-190774, MC-199237, MC-199239, MC-199241, MC-199242, MC-199248, MC-201748, MC-201750, MC-201751, MC-201753, MC-201760, MC-202595, MC-202598, MC-203036, MC-205158, MC-206570, MC-212305, MC-214693, MC-214694, MC-214695, MC-214696