Datasources: Use getDefaultQuery in annotations editors (#61870)

+ Add Cloudwatch default annotation

public/app/features/query/state/runRequest.ts

@@ -24,7 +24,6 @@ import {
 import { toDataQueryError } from '@grafana/runtime';
 import { isExpressionReference } from '@grafana/runtime/src/utils/DataSourceWithBackend';
 import { backendSrv } from 'app/core/services/backend_srv';
-import { queryIsEmpty } from 'app/core/utils/query';
 import { dataSource as expressionDatasource } from 'app/features/expressions/ExpressionDatasource';
 import { ExpressionQuery } from 'app/features/expressions/types';
 
@@ -176,10 +175,11 @@ export function callQueryMethod(
   request: DataQueryRequest,
   queryFunction?: typeof datasource.query
 ) {
-  // If the datasource has defined a default query, make sure it's applied if the query is empty
-  request.targets = request.targets.map((t) =>
-    queryIsEmpty(t) ? { ...datasource?.getDefaultQuery?.(CoreApp.PanelEditor), ...t } : t
-  );
+  // If the datasource has defined a default query, make sure it's applied
+  request.targets = request.targets.map((t) => ({
+    ...datasource?.getDefaultQuery?.(CoreApp.PanelEditor),
+    ...t,
+  }));
 
   // If its a public datasource, just return the result. Expressions will be handled on the backend.
   if (datasource.type === 'public-ds') {