✨(component): 优化 switch 渲染逻辑和 text 描述边距

package/component/src/component/switch/index.less

@@ -85,6 +85,7 @@
 
 .layui-form-switch em {
   position: relative;
+  padding: 0 2px;
   text-align: center !important;
   color: #999 !important;
   font-style: normal !important;

package/component/src/component/switch/index.vue

@@ -75,7 +75,7 @@ const styles = computed(() => {
         'layui-switch-disabled': disabled,
       }"
     >
-      <em>{{ isActive == true ? onswitchText : unswitchText }}</em>
+      <em v-if="onswitchText || unswitchText">{{ isActive == true ? onswitchText : unswitchText }}</em>
       <span>
         <div>
           <template v-if="loading">

package/component/src/provider/index.vue

@@ -55,7 +55,6 @@ const changeLocales = (lang: string, locales: any, merge: boolean) => {
 };
 
 const changeTheme = (theme: string) => {
-
   const defaultPartial: Partial<Theme> = {
     mode: 1,
     brightness: 100,