BUG: DataFrame.astype(dict) can cause column metadata to be lost

BUG: DataFrame.astype(dict) can cause column metadata to be lost: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Setup: python In 2 : df = pd.DataFrame(data=np.random.randint(5, size=(3, 4)), ...: columns=pd.UInt64Index(range(500, 504), name='foo')) ...: