Fixed SetDefaultValues usage.

Use vtkSMProperty::ResetToDomainDefaults() instead of
vtkSMDomain::SetDefaultValues() when possible since that a newer and
cleaner API.

Change-Id: I1b0ea0c2d5537c0bda9d563daf550d00b073c506
Merge topic 'scalar-reset-button' into next

cd63e9bc Fixed SetDefaultValues usage.