Wizard SendGrid API Key

When using the setup wizard with the SendGrid API, the API key is saved incorrectly (likely some form of base64 encoding without decoding) and causing errors when attempting to send a test email. This has been tested on multiple domains and was starting to be reported after the recent release of version 2.8.3. Setting the API key within the settings page does not have this issue and test emails are successfully delivered.

Example API Key Manipulation:

Before Save: SG.B11l#########################################################_lCnU
After Save: U0cuQjE################################################################################sQ25V

Test Email Error Message:

Code: 401, Message: Unauthorized, Body: {"errors":[{"message":"The provided authorization grant is invalid, expired, or revoked","field":null,"help":null}]}