Broken defaults

[Lukast dev]

Hello,

I would like to ask you if you know what broke the default preset in
the brush editor. E.g. Experiment brush sets the defaults in
constructor KisExperimentOpOptionsWidget
but in the UI it is 0 (e.g. speed and displacement to 42). Also dyna
brush is broken --
currently I'm working on polishing brush engines (dyna brush will be
eliminated, but I need to move some features to different brush
engines) so I noticed this problem.

Who knows what's wrong?