AP_NavEKF3: mark covariance matrix mutation in core

Change the mutations to use `Pmut` and change the define to keep the
non-mutations from accidentally mutating.

The mutations take a variety of forms but all appear to preserve
symmetry.
This commit is contained in:
Thomas Watson
2026-09-22 11:56:43 +10:00
committed by Andrew Tridgell
parent d4fe0e9321
commit fb434ea510
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