Cherry Pick Jafaral 63fd793

[Ian-Boraks]

On Jafaral's custom Mazda forks, they have disabled the steer_required alert for newer Mazdas as they have the ability to steer down to zero.

From Jafaral on the comma.ai community discord (message link):

I chose to do alerts only when it actually make sense. When I added the official support, Comma requested to keep those alerts, so I kept/added them. However, there was so much unnecessary noise and I actually polled the users here and all requested no audiable alrers . . . and for the new CX-5, there is no practical reason to annoy the user when the car is driving at 0.000005 mph with no torque, who cares

I cherry picked their edits that appear in all of the custom Mazda branches. Here are a few examples:
https://github.com/Jafaral/openpilot/tree/mazda-eps22-swap-new/
https://github.com/Jafaral/openpilot/commits/mazda-0.9.9/
https://github.com/Jafaral/openpilot/commits/mazda-0.8.16

I decided not to cherry pick the edits to opendbc_repo/opendbc/car/mazda/interface.py:

- ret.dashcamOnly = candidate not in (CAR.MAZDA_CX5_2022, CAR.MAZDA_CX9_2021)
+ ret.dashcamOnly = False # candidate not in (CAR.MAZDA_CX5_2022, CAR.MAZDA_CX9_2021)

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