[BrowserTest] Add test on boolean widget (#2421)

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browser_tests/fixtures/utils/litegraphUtils.ts

@@ -83,6 +83,12 @@ export class NodeWidgetReference {
       y: pos[1]
     }
   }
+
+  async click() {
+    await this.node.comfyPage.canvas.click({
+      position: await this.getPosition()
+    })
+  }
 }
 
 export class NodeReference {