UI: Fix for datasources component validation in basic mode

ui-ngx/src/app/modules/home/components/widget/config/basic/chart/flot-basic-config.component.ts

@@ -82,8 +82,6 @@ export class FlotBasicConfigComponent extends BasicWidgetConfigComponent {
       legendConfig: [configData.config.settings?.legendConfig, []],
       actions: [configData.config.actions || {}, []]
     });
-    this.flotWidgetConfigForm.get('series').valueChanges
-      .subscribe(() => this.flotWidgetConfigForm.get('datasources').updateValueAndValidity());
   }
 
   protected prepareOutputConfig(config: any): WidgetConfigComponentData {

ui-ngx/src/app/modules/home/components/widget/config/datasources.component.ts

@@ -243,7 +243,7 @@ export class DatasourcesComponent implements ControlValueAccessor, OnInit, Valid
         }
       };
     }
-    if (this.hasAdditionalLatestDataKeys) {
+    if (this.hasAdditionalLatestDataKeys && !this.basicMode) {
       let valid = datasources.filter(datasource => datasource?.dataKeys?.length).length > 0;
       if (!valid) {
         this.timeseriesKeyError = true;