fix(model): add flipped UV map for right main gear wheel texture

[bouveng]

Summary of Changes

This PR flips the UV for the right main gear wheel texture, so it is not mirrored anymore.
This is an impl. of @Grinde81 's work.

Screenshots (if necessary)

BEFORE

Note mirrored texture on right main landing gear wheel

AFTER

Texture appearing correct on right main landing gear wheel

Discord username (if different from GitHub): @bouveng

Testing instructions

Spawn with default A32NX livery, or any other livery with text on the main wheels.
Observe no mirroring.

How to download the PR for QA

Every new commit to this PR will cause a new A32NX artifact to be created, built, and uploaded.

1. Make sure you are signed in to GitHub
2. Click on the Checks tab on the PR
3. On the left side, click on the bottom PR tab
4. Click on the A32NX download link at the bottom of the page

[ShadowFrost3]

Quality Assurance Tester Report

Object of testing: #6931
Tier of Testing:1
Date: 18/03/2022

Testing Process: Look at tires
Make sure tires are on properly
???
profit
???
look at the tires again
the tires aren't on properly
???
losses

Redownload
look at tires
tires are on properly
???
profit

Negatives: They don't look the same as in the supplied reference -- Livery dependent
Testing Results: Passed