Table: fix multi-header remove column (#9377)

packages/table/src/table-column.js

@@ -297,7 +297,8 @@ export default {
 
   destroyed() {
     if (!this.$parent) return;
-    this.owner.store.commit('removeColumn', this.columnConfig);
+    const parent = this.$parent;
+    this.owner.store.commit('removeColumn', this.columnConfig, this.isSubColumn ? parent.columnConfig : null);
   },
 
   watch: {

packages/table/src/table-store.js

@@ -256,10 +256,14 @@ TableStore.prototype.mutations = {
     this.scheduleLayout();
   },
 
-  removeColumn(states, column) {
-    let _columns = states._columns;
-    if (_columns) {
-      _columns.splice(_columns.indexOf(column), 1);
+  removeColumn(states, column, parent) {
+    let array = states._columns;
+    if (parent) {
+      array = parent.children;
+      if (!array) array = parent.children = [];
+    }
+    if (array) {
+      array.splice(array.indexOf(column), 1);
     }
 
     this.updateColumns(); // hack for dynamics remove column