Add refresh button to selecton toolbox (#2612)

src/types/litegraph-augmentation.d.ts

@@ -22,6 +22,11 @@ declare module '@comfyorg/litegraph/dist/types/widgets' {
       index: number
     ) => Promise<unknown> | unknown
 
+    /**
+     * Refreshes the widget's value or options from its remote source.
+     */
+    refresh?: () => unknown
+
     /**
      * If the widget supports dynamic prompts, this will be set to true.
      * See extensions/core/dynamicPrompts.ts