Docs: enable packages reference docs for 7-beta (#23953)

* added packages reference menu item.

* removed the draft flag.

* Updated docs by running script.

docs/sources/packages_api/data/appevents/alerterrorpayload.md

@@ -0,0 +1,24 @@
++++
+# -----------------------------------------------------------------------
+# Do not edit this file. It is automatically generated by API Documenter.
+# -----------------------------------------------------------------------
+title = "AlertErrorPayload"
+keywords = ["grafana","documentation","sdk","@grafana/data"]
+type = "docs"
++++
+
+## AppEvents.AlertErrorPayload type
+
+### AppEvents.AlertErrorPayload type
+
+<b>Signature</b>
+
+```typescript
+export declare type AlertErrorPayload = [string, (string | Error)?];
+```
+<b>Import</b>
+
+```typescript
+import { AppEvents } from '@grafana/data';
+const { AlertErrorPayload } = AppEvents;
+```