add index theme vars

Author: huangshuwei

packages/style/ve-table.less

@@ -2,17 +2,6 @@
 
 @ve-normal-cell-selection-border-index: 0;
 @ve-normal-cell-selection-corner-index: 1;
-
-@ve-fixed-body-cell-index: 10;
-@ve-fixed-cell-selection-border-index: 10;
-@ve-fixed-cell-selection-corner-index: 11;
-
-@ve-fixed-header-index: 20;
-@ve-fixed-foot-index: 20;
-
-@ve-fixed-header-cell-index: 30;
-@ve-fixed-foot-cell-index: 30;
-
 @ve-column-resizer-handler-index: 50;
 @ve-column-resizer-line-index: 50;
 

packages/theme-dark/var.less

@@ -4,6 +4,13 @@
 @ve-default-font-size: 14px;
 
 /* ve-table */
+@ve-fixed-body-cell-index: 10;
+@ve-fixed-cell-selection-border-index: 10;
+@ve-fixed-cell-selection-corner-index: 11;
+@ve-fixed-header-index: 20;
+@ve-fixed-foot-index: 20;
+@ve-fixed-header-cell-index: 30;
+@ve-fixed-foot-cell-index: 30;
 @ve-table-head-row-height: 40px;
 @ve-table-body-row-height: 40px;
 @ve-table-foot-row-height: 40px;

packages/theme-default/var.less

@@ -3,6 +3,13 @@
 @ve-default-font-size: 14px;
 
 /* ve-table */
+@ve-fixed-body-cell-index: 10;
+@ve-fixed-cell-selection-border-index: 10;
+@ve-fixed-cell-selection-corner-index: 11;
+@ve-fixed-header-index: 20;
+@ve-fixed-foot-index: 20;
+@ve-fixed-header-cell-index: 30;
+@ve-fixed-foot-cell-index: 30;
 @ve-table-head-row-height: 40px;
 @ve-table-body-row-height: 40px;
 @ve-table-foot-row-height: 40px;