See https://openfhe.discourse.group/t/ckks-rekeygen-throws-mismatched-ringdimension-for-keys-of-the-same-cryptocontext-using-the-python-wrapper/2350
See https://openfhe.discourse.group/t/ckks-rekeygen-throws-mismatched-ringdimension-for-keys-of-the-same-cryptocontext-using-the-python-wrapper/2350