fix(widget-builder): Typo in route check (#92147)

Widget Builder doesn't open when adding to a new dashboard. This is
because there's a small difference in routes. New dashboards have
`/dashboards/` vs `/dashboard/` in detail views.

This fixes the widget builder opening having issues on single tenant
instances where the domain isn't the nice `org_slug.sentry.io` format.

Author: narsaynorath

static/app/views/dashboards/detail.tsx

@@ -444,18 +444,18 @@ class DashboardDetail extends Component<Props, State> {
     const {dashboardId, widgetIndex} = params;
 
     const widgetBuilderRoutes = [
-      `/organizations/${organization.slug}/dashboard/new/widget-builder/widget/new/`,
+      `/organizations/${organization.slug}/dashboards/new/widget-builder/widget/new/`,
+      `/organizations/${organization.slug}/dashboards/new/widget-builder/widget/${widgetIndex}/edit/`,
       `/organizations/${organization.slug}/dashboard/${dashboardId}/widget-builder/widget/new/`,
-      `/organizations/${organization.slug}/dashboard/new/widget-builder/widget/${widgetIndex}/edit/`,
       `/organizations/${organization.slug}/dashboard/${dashboardId}/widget-builder/widget/${widgetIndex}/edit/`,
     ];
 
     if (USING_CUSTOMER_DOMAIN) {
       widgetBuilderRoutes.push(
         ...[
           `/dashboards/new/widget-builder/widget/new/`,
-          `/dashboard/${dashboardId}/widget-builder/widget/new/`,
           `/dashboards/new/widget-builder/widget/${widgetIndex}/edit/`,
+          `/dashboard/${dashboardId}/widget-builder/widget/new/`,
           `/dashboard/${dashboardId}/widget-builder/widget/${widgetIndex}/edit/`,
         ]
       );