[Binding/Sofa.Core] FIX Node iterators.#171

fredroy merged 2 commits intosofa-framework:mastersofa-framework/SofaPython3:masterfrom

CRIStAL-PADR:pr-add-contains-in-nodeiteratorCRIStAL-PADR/plugin.SofaPython3:pr-add-contains-in-nodeiteratorCopy head branch name to clipboard