feat: display label_on/label_off for boolean widgets in vueNodes mode (#7894)

## Summary

Add support for displaying custom on/off labels for boolean toggle
widgets, matching the behavior in litegraph mode.

## Screenshots
before - litegraph
<img width="1232" height="600" alt="image"
src="https://github.com/user-attachments/assets/aae91acd-4b6b-4a89-aded-c5445e352006"
/>
before - vueNodes
<img width="869" height="584" alt="image"
src="https://github.com/user-attachments/assets/a69dc71e-45f7-4941-911f-f037a2b1c5c2"
/>

after - vueNodes
<img width="1156" height="608" alt="image"
src="https://github.com/user-attachments/assets/818164a6-826b-4545-bc20-e01625f11d7d"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7894-feat-display-label_on-label_off-for-boolean-widgets-in-vueNodes-mode-2e26d73d365081a3b938c87dd4cf23aa)
by [Unito](https://www.unito.io)

src/renderer/extensions/vueNodes/widgets/components/WidgetToggleSwitch.vue

@@ -1,11 +1,25 @@
 <template>
   <WidgetLayoutField :widget>
-    <ToggleSwitch
-      v-model="modelValue"
-      v-bind="filteredProps"
-      class="ml-auto block"
-      :aria-label="widget.name"
-    />
+    <div class="ml-auto flex w-fit items-center gap-2">
+      <span
+        v-if="stateLabel"
+        :class="
+          cn(
+            'text-sm transition-colors',
+            modelValue
+              ? 'text-node-component-slot-text'
+              : 'text-node-component-slot-text/50'
+          )
+        "
+      >
+        {{ stateLabel }}
+      </span>
+      <ToggleSwitch
+        v-model="modelValue"
+        v-bind="filteredProps"
+        :aria-label="widget.name"
+      />
+    </div>
   </WidgetLayoutField>
 </template>
 
@@ -13,7 +27,9 @@
 import ToggleSwitch from 'primevue/toggleswitch'
 import { computed } from 'vue'
 
+import type { IWidgetOptions } from '@/lib/litegraph/src/types/widgets'
 import type { SimplifiedWidget } from '@/types/simplifiedWidget'
+import { cn } from '@/utils/tailwindUtil'
 import {
   STANDARD_EXCLUDED_PROPS,
   filterWidgetProps
@@ -22,7 +38,7 @@ import {
 import WidgetLayoutField from './layout/WidgetLayoutField.vue'
 
 const { widget } = defineProps<{
-  widget: SimplifiedWidget<boolean>
+  widget: SimplifiedWidget<boolean, IWidgetOptions>
 }>()
 
 const modelValue = defineModel<boolean>()
@@ -30,4 +46,10 @@ const modelValue = defineModel<boolean>()
 const filteredProps = computed(() =>
   filterWidgetProps(widget.options, STANDARD_EXCLUDED_PROPS)
 )
+
+const stateLabel = computed(() => {
+  const options = widget.options
+  if (!options?.on && !options?.off) return null
+  return modelValue.value ? (options.on ?? 'true') : (options.off ?? 'false')
+})
 </script>