CloudWatch: Prevent log groups from being removed on query change (#61891)

public/app/plugins/datasource/cloudwatch/components/LogsCheatSheet.tsx

@@ -237,6 +237,7 @@ export default class LogsCheatSheet extends PureComponent<
             region: this.props.query.region,
             id: this.props.query.refId ?? 'A',
             logGroupNames: 'logGroupNames' in this.props.query ? this.props.query.logGroupNames : [],
+            logGroups: 'logGroups' in this.props.query ? this.props.query.logGroups : [],
           })
         }
       >