Validation not cleared on update: Change password - password mismatch

[0xKheops]

in the change password form, if the new passwords do not match, a "password mismatch" error message appears
if the typo is in the first one of the two, once fixed, error message still appears.

P3 because non-blocking, as submit button is enabled as soon as password is fixed, eventhough the error message still appears.