Update perpendicular-flap/solid-solids4foam

[MakisH]

In recent solids4foam version (e.g., v2.3), the perpendicular-flap tutorial does not run, as some of the configuration options have changed. Related issue: solids4foam/solids4foam#279

I don't know much about the configuration, but blindly trying different candidates, I got it to work again.

Originally, the case was using the now removed gradSchemes option extendedLeastSquares. I tried with leastSquares and with leastSquaresS4f, and I am comparing to the old reference results in this figure:

There is clearly room for improvement to match the previous state. @philipcardiff @iBatistic what else could I try?

The original case was already not tuned enough to match the other available setups (see the second figure on the tutorial post-processing section). I am not concerned about that at the moment (I mainly don't want to make it work again), but we could give it another try. Bringing CalculiX into the picture (current and archived reference results):

Current setup:

• solids4foam from the current develop branch (> v2.3)
• OpenFOAM v2512
• OpenFOAM adapter from the current develop branch
• CalculiX v2.20
• preCICE v3.4.1

Reference setup: solids4foam v2.0, OpenFOAM v2012, OpenFOAM adapter v1.3.1, CalculiX v2.20, preCICE v3.1.1.

Plotting script and data: solids4foam-debugging.tar.gz

Checklist

• I added a summary of any user-facing changes (compared to the last release) in the changelog-entries/<PRnumber>.md.