Table: disable filter when filters is an empty array (#11864)

packages/table/src/table-column.js

@@ -270,7 +270,7 @@ export default {
       fixed: this.fixed === '' ? true : this.fixed,
       filterMethod: this.filterMethod,
       filters: this.filters,
-      filterable: this.filters || this.filterMethod,
+      filterable: this.filters && this.filters.length && this.filterMethod,
       filterMultiple: this.filterMultiple,
       filterOpened: false,
       filteredValue: this.filteredValue || [],

packages/table/src/table-header.js

@@ -339,7 +339,7 @@ export default {
     handleHeaderClick(event, column) {
       if (!column.filters && column.sortable) {
         this.handleSortClick(event, column);
-      } else if (column.filters && !column.sortable) {
+      } else if (column.filterable && !column.sortable) {
         this.handleFilterClick(event, column);
       }