More useful default cols on "Pages" list (fixes #8199)

code/controllers/CMSMain.php

@@ -753,7 +753,7 @@ class CMSMain extends LeftAndMain implements CurrentPageIdentifier, PermissionPr
 		// Don't allow navigating into children nodes on filtered lists
 		$fields = array(
 			'getTreeTitle' => _t('SiteTree.PAGETITLE', 'Page Title'),
-			'Created' => _t('SiteTree.CREATED', 'Date Created'),
+			'singular_name' => _t('SiteTree.PAGETYPE'),
 			'LastEdited' => _t('SiteTree.LASTUPDATED', 'Last Updated'),
 		);
 		$gridField->getConfig()->getComponentByType('GridFieldSortableHeader')->setFieldSorting(array('getTreeTitle' => 'Title'));