fix(flaps): reverse-apply FPPU LUTs to compensate for non-linear behaviour

[lukecologne]

Summary of Changes

This PR fixes a bug I introduced in #7221, regarding the impact of the flaps on the sim. Previously, the flaps systems assumed a linear flaps/slats surface angle vs. FPPU angle, and thus calculated the flaps/slat percentage as current FPPU angle / max FPPU angle. Now, in #7221, I changed the curve for flaps to a non linear one, which is realistic, as the way that the flaps are actuated creates a non-linear FPPU vs surface behaviour. This has now messed up the flaps angles in the sim, and thus the impact on the FM, since they are written to the sim as percentage. These percentages are now incorrect, due to the non-linear curve. To fix this situation, I have reverse-applied the LUTs, to linearize the flaps percentage. It is now again calculated correctly as current flaps angle / max flaps angle (not FPPU angle).

Screenshots (if necessary)

• Before feat(sfcc): add SFCC output bus words #7221
  
• After feat(sfcc): add SFCC output bus words #7221, before this PR
  
• After this PR
  

References

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