fix(switch): loading bug

src/packages/__VUE/switch/demo.vue

@@ -54,7 +54,7 @@
     <h2>{{ translate('title8') }}</h2>
     <nut-cell>
       <nut-switch v-model="checked" @change="change" loading>
-        <template #icon><Loading /></template>
+        <template #icon><Loading name="loading" /></template>
       </nut-switch>
     </nut-cell>
   </div>

src/packages/__VUE/switch/index.taro.vue

@@ -2,7 +2,7 @@
   <view :class="classes" @click="onClick" :style="style">
     <view class="nut-switch-button">
       <slot name="icon" v-if="loading">
-        <Loading1 />
+        <Loading1 name="loading" />
       </slot>
       <template v-if="activeText">
         <view class="nut-switch-label open" v-show="modelValue">{{ activeText }}</view>

src/packages/__VUE/switch/index.vue

@@ -2,7 +2,7 @@
   <view :class="classes" @click="onClick" :style="style">
     <view class="nut-switch-button">
       <slot name="icon" v-if="loading">
-        <Loading1 />
+        <Loading1 name="loading" />
       </slot>
       <template v-if="activeText">
         <view class="nut-switch-label open" v-show="modelValue">{{ activeText }}</view>

src/sites/mobile-taro/vue/src/feedback/pages/switch/index.vue

@@ -37,7 +37,7 @@
 
     <h2>自定义加载图标</h2>
     <nut-cell>
-      <nut-switch v-model="checked" @change="switchChange"><Loading /></nut-switch>
+      <nut-switch v-model="checked" @change="switchChange"><Loading name="loading" /></nut-switch>
     </nut-cell>
   </div>
 </template>