style: update dark theme style

web/src/styles/antd/dark.less

@@ -172,6 +172,10 @@
 
   // 空状态
   .ant-empty {
+    &.ant-empty-normal {
+      color: rgba(255, 255, 255, 0.65);
+    }
+
     .ant-empty-img-default-ellipse {
       fill: #fff;
       fill-opacity: 0.08;
@@ -250,6 +254,10 @@
         border-bottom: 1px solid #303030;
       }
 
+      & > tr.ant-table-placeholder:hover > td {
+        background-color: rgba(255,255,255,0.2);
+      }
+
       tr.ant-table-row:hover > td,
       tr > td.ant-table-cell-row-hover {
         background-color: rgba(255, 255, 255, 0.1);