fix(setting-stylePanel): 只允许有一个 id，样式选择器只能添加一个 id (#295)

packages/settings/styles/src/components/classNamesContainer/index.vue

@@ -218,7 +218,7 @@ const editClassName = (curClassName, optionType = OPTION_TYPE.ADD, oldSelector =
 
       res = `${typeMap[type] ?? ''} ${newClassNames}`
     } else {
-      // 前后两种类型一直，替换原类型就好
+      // 前后两种类型一致，替换原类型就好
       res = typeMap[type]
         .split(' ')
         .map((item) => {
@@ -235,6 +235,10 @@ const editClassName = (curClassName, optionType = OPTION_TYPE.ADD, oldSelector =
   }
 
   const addSelectorHandler = () => {
+    if (type === SELECTOR_TYPE.ID) {
+      return newClassNames
+    }
+
     return `${typeMap[type] ?? ''} ${newClassNames}`
   }