Player can rotate past custom mob lock_rider_rotation when in third person

Partner Rank: 3

Verification builds: 1.13.31.0, 1.14.0.2
Regression builds: 1.12.25.0

Summary: When riding a mob with lock_rider_rotation, you can rotate past the range simply by entering third person mode. When you leave third person mode, you revert back to the center.

Impact: This affects a small mechanic in an upcoming map.

Repro Steps:

1. Download and open the attached world (same world as MCM-850)
2. Right-click the cow to ride it
3. Look to the left until you can't look any further
4. Press F5 and look all the way around the cow

Expected Results: Can't look past the restriction regardless of third person mode.

Observed Results: In third person mode, you can rotate in ways that you can't otherwise.

Screenshots/Videos attached: Yes

Notes: Does not affect vanilla boats. Cow has near-identical behavior file to boats, so I would expect behavior to be the same.