Jetpack disconnect breaks the site

[dwainm]

When you disconnect Jetpack WCPay breaks and the whole site stops working.

To reproduce:

1. Go to Admin > Jetpack > Dashboard > Connections section on the dashboard screen > Manage Site Connection.
2. Click on disconnect.

[thenbrent]

Related discussion on Automattic/jetpack#13843 with the likely fix mentioned here: Automattic/jetpack#13843 (comment)

[dwainm]

It is related but not exactly the same thing. This plugin expects JP to be active and connected but does not fail gracefully a user clicks on disconnect after a connection has been established.

[reykjalin]

I'm pretty sure this is one of the culprits:

woocommerce-payments/includes/wc-payment-api/class-wc-payments-http.php

Lines 34 to 39 in db6d213

	// TODO: Either revamp this auth before releasing WCPay, or properly check that Jetpack is installed & connected.
	if ( class_exists( 'Automattic\Jetpack\Connection\Client' ) ) {
	return Automattic\Jetpack\Connection\Client::remote_request( $args, $body );
	} else {
	return Jetpack_Client::remote_request( $args, $body );
	}

[dwainm]

As part of this, we should probably not load anything besides a hint to connect JP.

[dwainm]

Fixed in #391