fix(selection.js): Check if column is row header before disabling sel…

…ection.

Allows selection from the checkbox on row headers when enableFullRowSelection is on.

fix angular-ui#5239

src/features/selection/js/selection.js

@@ -940,7 +940,7 @@
             };
 
             function registerRowSelectionEvents() {
-              if ($scope.grid.options.enableRowSelection && $scope.grid.options.enableFullRowSelection && !$elm.hasClass('ui-grid-row-header-cell')) {
+              if ($scope.grid.options.enableRowSelection && $scope.grid.options.enableFullRowSelection && $scope.col.colDef.name !== 'selectionRowHeaderCol') {
                 $elm.addClass('ui-grid-disable-selection');
                 $elm.on('touchstart', touchStart);
                 $elm.on('touchend', touchEnd);