to verify: Customer email address normalization not being done on update

[michaelbromley]

Describe the bug
Ran into a strange situation in prod where a customer was having trouble resetting password.

It looks like the sequence was:

1. Customer changed email address via shop api to an address with upper & lowercase characters
2. Customer verified this email address successfully
3. Later on they wanted to reset their password, and could not
4. When I attempted to manually use the password reset token, I was getting strange errors:

{
    "errors": [
        {
            "message": "Unexpected error value: { __typename: \"InvalidCredentialsError\", errorCode: \"INVALID_CREDENTIALS_ERROR\", message: \"INVALID_CREDENTIALS_ERROR\", authenticationError: \"\" }",
            "locations": [
                {
                    "line": 2,
                    "column": 3
                }
            ],
            "path": [
                "resetPassword"
            ]
        }
    ],
    "data": null
}

My suspicion is that it is because of the uppercase chars in the email address. On account creation, we normalize to lowercase using the normalizeEmailAddress() function, but I think this is missing for updates

• via the Shop API email address change flow
• via manual changes via the Admin API