Accept trial iterate if acceptable to augmented filter and constraint violation decreased

[cvanaret]

I encountered a situation where a trial iterate:

• was acceptable to the augmented filter (filter + current point)
• decreased the constraint violation
• but was rejected because the switching condition was satisfied and Armijo failed.

-> we need to test this scenario and accept early before testing the switching condition.

[cvanaret]

@leyffer For the filtersqp preset, this situation happens for the CUTEst instances deconvc, dallass, hs103, pentagon, hs092, s365mod, hs027, hs062, cresc4, avion2, mwright, hs090, and hs089.