fix: All alert annotations showed up in unsaved/new dashboards graph panels with alert, fixes #8361

public/app/features/annotations/annotations_srv.ts

@@ -65,7 +65,7 @@ export class AnnotationsSrv {
     var panel = options.panel;
     var dashboard = options.dashboard;
 
-    if (panel && panel.alert) {
+    if (dashboard.id && panel && panel.alert) {
       return this.backendSrv.get('/api/annotations', {
         from: options.range.from.valueOf(),
         to: options.range.to.valueOf(),