sdk: Fix walk_submodel() skipping Entity and Operation children#465

s-heppner merged 3 commits intoeclipse-basyx:developeclipse-basyx/basyx-python-sdk:developfrom

rwth-iat:fix/issue-423-walk-submodel-entity-operationrwth-iat/basyx-python-sdk:fix/issue-423-walk-submodel-entity-operationCopy head branch name to clipboard