fix(webapp): honor the webhook kill switch in test send, fix duplicate id and pager refresh

Three dashboard fixes:

The test-send action now returns early when WEBHOOK_ENABLED is off, matching the
ingress route, so a test send cannot record a delivery the disabled engine would
never process (no partition, no worker).

The duplicate outcome no longer re-prefixes the delivery id (it is already a
friendlyId), so the console shows a valid id and a working "view original" link
instead of a whd_whd_ id.

The "new deliveries" button now clears the deliveriesCursor/deliveriesDirection
params this page actually paginates on, so it shows the new rows past page one.

Author: ericallam

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.webhooks.$webhookParam/route.tsx

@@ -521,10 +521,10 @@ function LiveDeliveriesTable({
 
   const onClickShowNewDeliveries = () => {
     dismissNewDeliveries();
-    if (searchParams.has("cursor") || searchParams.has("direction")) {
+    if (searchParams.has("deliveriesCursor") || searchParams.has("deliveriesDirection")) {
       setSearchParams((prev) => {
-        prev.delete("cursor");
-        prev.delete("direction");
+        prev.delete("deliveriesCursor");
+        prev.delete("deliveriesDirection");
         return prev;
       });
       return;

apps/webapp/app/routes/resources.orgs.$organizationSlug.projects.$projectParam.env.$envParam.webhooks.endpoints.$endpointParam.send.ts

@@ -50,6 +50,10 @@ export async function action({ request, params }: ActionFunctionArgs): Promise<W
   const user = await requireUser(request);
   const { organizationSlug, projectParam, envParam, endpointParam } = ParamsSchema.parse(params);
 
+  if (env.WEBHOOK_ENABLED !== "1") {
+    return { success: false, error: "Webhooks are not enabled on this instance." };
+  }
+
   const project = await findProjectBySlug(organizationSlug, projectParam, user.id);
   if (!project) return { success: false, error: "Project not found" };
   const environment = await findEnvironmentBySlug(project.id, envParam, user.id);
@@ -189,7 +193,7 @@ export async function action({ request, params }: ActionFunctionArgs): Promise<W
     case "handshake":
       return { success: true, httpStatus: 200, handshake: true, responseBody: result.body };
     case "duplicate": {
-      const friendlyId = `whd_${result.deliveryId}`;
+      const friendlyId = result.deliveryId;
       if (shouldRedirect) throw redirect(deliveryPathFor(friendlyId));
       return {
         success: true,