TimeSeriesPanel: Allow threshold indicators without change handler (#60575)

packages/grafana-ui/src/components/PanelChrome/PanelContext.ts

@@ -45,6 +45,13 @@ export interface PanelContext {
    */
   canEditThresholds?: boolean;
 
+  /**
+   * Shows threshold indicators on the right-hand side of the panel
+   *
+   * @alpha -- experimental
+   */
+  showThresholds?: boolean;
+
   /**
    * Called when a panel wants to change default thresholds configuration
    *