fix(webapp): allow filtering webhook deliveries by the Filtered status

The deliveries status filter now includes Filtered, so deliveries that were received and verified but intentionally not routed can be filtered for in the dashboard.

Author: ericallam

apps/webapp/app/components/webhookDeliveries/v1/WebhookDeliveryFilters.tsx

@@ -35,6 +35,7 @@ const deliveryStatuses: { value: WebhookDeliveryStatus; title: string; color: st
   { value: "PROCESSING", title: "Processing", color: "#3B82F6" },
   { value: "SUCCEEDED", title: "Succeeded", color: "#28BF5C" },
   { value: "FAILED", title: "Failed", color: "#E11D48" },
+  { value: "FILTERED", title: "Filtered", color: "#64748B" },
 ];
 
 const statusTitleByValue = new Map(deliveryStatuses.map((s) => [s.value, s.title]));