`SpecialMWOAuthManageMyGrants` handles the flow for listing the consumers to which a user has granted access. The user can also manage access to this consumer using this special page or revoke access entirely.
Integration tests would be written to cover the `/list`, `/update`, `/revoke`, and `/manage/<accesstoken>` endpoints and their interaction with the DB. Unit tests would be written for self-contained code paths within and related classes used by this special page.
## Impact
[ ] Increase coverage of the respective special page: https://doc.wikimedia.org/cover-extensions/OAuth/src/Frontend/SpecialPages/SpecialMWOAuthManageMyGrants.php.html
[ ] Increase coverage of submit control classes
[ ] https://doc.wikimedia.org/cover-extensions/OAuth/src/Control/ConsumerSubmitControl.php.html
[ ] https://doc.wikimedia.org/cover-extensions/OAuth/src/Control/ConsumerAcceptanceAccessControl.php.html
[ ] https://doc.wikimedia.org/cover-extensions/OAuth/src/Control/ConsumerAccessControl.php.html