[9.x] Bug fix: Use correct parameters to send email through SES via SesV2Client

[fideloper]

The parameters and tests were updated to use the correct array keys needed for the newer SES client.

This PR does 2 things:

1. Uses the correct parameters to send a raw email 😅
2. Removes the FromEmailAddress parameter (explanation below)

[fideloper]

Dropping the FromEmailAddress parameter:

Using the FromEmailAddress parameter appears to over-writes the From address set in the Raw email headers.

This has the unwanted affect of removing the name portion of the From email (e.g. name <[email protected]> becomes [email protected]).

So I believe we can drop that parameter.

It's seemingly not the same as the old API's Source which is required as a fallback if no From is set in the raw email.

Docs for comparison of relevant explanation:

SesClient::sendRawEmail()

Source: The identity's email address. If you do not provide a value for this parameter, you must specify a "From" address in the raw text of the message. (You can also specify both.)

SesV2Client::sendEmail()

FromEmailAddress: The email address that you want to use as the "From" address for the email. The address that you specify has to be verified.