fix: After the page is redirected, the voice playback does not stop (#2789)

Author: shaohuzhang1

ui/src/components/ai-chat/component/operation-button/ChatOperationButton.vue

@@ -539,6 +539,9 @@ onBeforeUnmount(() => {
   if (audioManage.value) {
     audioManage.value.pause()
   }
+  if (window.speechSynthesis) {
+    window.speechSynthesis.cancel()
+  }
 })
 </script>
 <style lang="scss" scoped>