Toolbar: Update the site editor link in the Admin Bar.

The details page is being removed from the site editor in 6.6. we need to direct the admin bar menu item to the "edit" mode page directly.

Props youknowriad, mamaduka.
Fixes #61266.

git-svn-id: https://develop.svn.wordpress.org/trunk@58223 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/admin-bar.php

@@ -455,6 +455,7 @@ function wp_admin_bar_site_menu( $wp_admin_bar ) {
  *
  * @since 5.9.0
  * @since 6.3.0 Added `$_wp_current_template_id` global for editing of current template directly from the admin bar.
+ * @since 6.6.0 Added the `canvas` query arg to the Site Editor link.
  *
  * @global string $_wp_current_template_id
  *
@@ -481,6 +482,7 @@ function wp_admin_bar_edit_site_menu( $wp_admin_bar ) {
 				array(
 					'postType' => 'wp_template',
 					'postId'   => $_wp_current_template_id,
+					'canvas'   => 'edit',
 				),
 				admin_url( 'site-editor.php' )
 			),