This PR adds a test demonstrating inconsistent behavior between pd.array and pd.Series when dtype=str and None values are present. Related issue: pandas-dev/pandas#57702Add test for inconsistent string dtype handling with None

This PR adds a test demonstrating inconsistent behavior between pd.array and pd.Series when dtype=str and None values are present. Related issue: pandas-dev/pandas#57702Add test for inconsistent string dtype handling with None #30351