perf: 滚动条调整，table右侧优化等

1.滚动条加宽、legend限制滚动条滑块最小长度
2.取消table右侧滚动条预留区域
3.调整其他因为布局改变而错乱的样式

nezha-fronted/src/components/page/config/promServer.vue

@@ -22,15 +22,14 @@
     </div>
     <div class="content-right">
       <div class="top-tools">
-        <div></div>
-        <div>
-          <button @click="toAdd" class="nz-btn nz-btn-size-normal nz-btn-style-light float-right margin-l-20"  :title="$t('overall.createPrometheusServer')"
-                  id="prom-add">
-                    <i class="nz-icon-create-square nz-icon"></i>
-          </button>
-          <div class="top-tool-search float-right">
+        <div class="top-tool-main-right">
+          <div class="top-tool-search">
             <search-input :searchMsg="searchMsg" @search="search"></search-input>
           </div>
+          <button @click="toAdd" class="nz-btn nz-btn-size-normal nz-btn-style-light margin-l-20"  :title="$t('overall.createPrometheusServer')"
+                  id="prom-add">
+            <i class="nz-icon-create-square nz-icon"></i>
+          </button>
         </div>
       </div>
       <el-table :data="tableData" border :height="$tableHeight.normal" style="width: 100%;" ref="promTable" class="nz-table" v-scrollBar:el-table>
@@ -563,9 +562,6 @@
         this.pageObj.pageSize = val;
         localStorage.setItem('nz-pageSize-' + localStorage.getItem('nz-username') + '-' + this.tableId, val);
         this.getTableData();
-        this.$nextTick(() => {
-          this.gutterHandler(".nz-table");
-        });
       },
       search: function (searchObj) {
         this.pageObj.pageNo = 1;
@@ -658,7 +654,6 @@
       this.getIdcData();
       this.getUserData();
       this.$nextTick(() => {
-        this.gutterHandler(".nz-table");
         //绑定滚动条事件，控制top按钮
         let el = this.$refs.promTable.$el.querySelector(".el-table__body-wrapper");
         if (el._ps_) {