perf: 优化endpoint侧滑内asset列表、asset选择弹框样式

1.asset搜索框样式优化
2.asset列表内asset不可选状态的样式优化

nezha-fronted/src/components/common/rightBox/editEndpointBox.vue

@@ -56,7 +56,7 @@
                   <!---->
                   <div class="pop-item-wider " >
                     <!-- begin--搜索框-->
-                    <div class="endpoint-asset-search">
+                    <div class="nz-btn-group nz-btn-group-size-normal nz-btn-group-light endpoint-asset-search">
                       <button type="button" class="nz-btn nz-btn-size-small nz-btn-style-light nz-btn-style-square nz-input-group-prepend" @click="assetSearch.dropdownShow = !assetSearch.dropdownShow">
                         <span class="endpoint-asset-label-txt">{{assetSearch.label}}</span>
                         <span>
@@ -443,11 +443,12 @@
 /* begin--搜索框*/
 .endpoint-asset-search {
   display: inline-block;
-  float: right;
-  padding: 7px 8px 0 0;
   position: relative;
   margin-top: -16px;
 }
+.endpoint-asset-search button {
+  height: 22px !important;
+}
 .endpoint-asset-search-dropdown {
   position: absolute;
   top: 34px;