Don't prompt unsaved when there is no unsaved workflow on window close (#2257)

src/components/dialog/UnloadWindowConfirmDialog.vue

@@ -13,11 +13,16 @@
 import { onBeforeUnmount, onMounted } from 'vue'
 
 import { useSettingStore } from '@/stores/settingStore'
+import { useWorkflowStore } from '@/stores/workflowStore'
 
 const settingStore = useSettingStore()
+const workflowStore = useWorkflowStore()
 
 const handleBeforeUnload = (event: BeforeUnloadEvent) => {
-  if (settingStore.get('Comfy.Window.UnloadConfirmation')) {
+  if (
+    settingStore.get('Comfy.Window.UnloadConfirmation') &&
+    workflowStore.modifiedWorkflows.length > 0
+  ) {
     event.preventDefault()
     return true
   }