Escape hatch added on non-GraphQL requests.

[kidunot89]

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What does this implement/fix? Explain your changes.

Adds escape hatch that prevents QL_Session_Handler from being used on any request not made to the GraphQL endpoint, (by default its /graphql).

This includes query made uses the GET method i.e. /graphql?query={...}.

The QL_Session_Handler is designed to only update and send a response header after specific mutations that make changes to the session data like addToCart.

TODO

• Configure codeception to properly merge code coverage results between suites.

Does this close any currently open issues?

#143

Any relevant logs, error output, GraphiQL screenshots, etc?

(If it’s long, please paste to https://ghostbin.com/ and insert the link here.)

Any other comments?

…

Where has this been tested?

Operating System: Ubuntu 18.04

WordPress Version: 5.2.3