ENHANCEMENT Use i18n template for page tree title

code/Controllers/CMSMain.php

@@ -529,11 +529,13 @@ class CMSMain extends LeftAndMain implements CurrentPageIdentifier, PermissionPr
                 'listViewLink' => $this->LinkListViewChildren($node->ID),
                 'rootTitle' => $rootTitle,
                 'extraClass' => $this->getTreeNodeClasses($node),
-                'Title' => sprintf(
-                    '(%s: %s) %s',
-                    trim(_t('SilverStripe\Admin\LeftAndMain.PAGETYPE', 'Page type'), ' :'),
-                    $node->i18n_singular_name(),
-                    $node->Title
+                'Title' => _t(
+                    self::class . '.PAGETYPE_TITLE',
+                    '(Page type: {type}) {title}',
+                    [
+                        'type' => $node->i18n_singular_name(),
+                        'title' => $node->Title,
+                    ]
                 )
             ];
         };