supplicant: enable SAE-H2E
H2E (hash to element) is a newer method for generating the PWE (password element) for SAE, alternative to the existing "hunting-and-pecking". It is considered more secure and it is mandatory for the WPA3 certification; also, SAE in the 6GHz band can only use H2E (hunting-and-pecking is disallowed).
Enable H2E in addition to hunting-and-pecking.