refactor: 调整导航SidePanel插槽内结构 多选按钮初始化

src/style/cpns/clip-search.less

@@ -4,12 +4,6 @@
   justify-content: flex-end;
   min-width: 300px;
   margin-right: 10px;
-  .clip-search-btn {
-    width: 25px;
-    height: 25px;
-    padding: 10px;
-    cursor: pointer;
-  }
   .clip-search-input {
     width: 90%;
     /* normalize */

src/style/cpns/clip-switch.less

@@ -34,4 +34,10 @@
       }
     }
   }
+  .clip-switch-btn {
+    width: 25px;
+    height: 25px;
+    padding: 10px;
+    cursor: pointer;
+  }
 }