Configuration doesn't work as expected.

[HoytRen]

I setup global discord webhook. then I see the webhook for chain said 'uses default if blank', but it in fact doesn't work. If I don't setup chain option, it will report no webhook found.

Here are a design issue, that the 'enabled' and 'webhook' looks coupled, but one is a supper option (that override the chain option), and an other is a default option (that override by chain option). This doesn't make sense, and need to be re-organized.