Editor: Expose the Site Editor Patterns page for classic themes.

The Site Editor Patterns page was exposed internally for the Classic theme as of WP6.5. As we aim to officially expose the new Patterns page as of WP6.6, this changeset makes the following changes available when a classic themes is activated:

- Link Appearance > Patterns submenu to the Site Editor Patterns page located at `wp-admin/site-editor.php?path=/patterns
- Remove Template Parts submenu

Props wildworks, audrasjb, ironprogrammer, azaozz, youknowriad.
Fixes #61109.




git-svn-id: https://develop.svn.wordpress.org/trunk@58278 602fd350-edb4-49c9-b593-d223f7449a82

Author: audrasjb

src/wp-admin/menu.php

@@ -206,25 +206,15 @@
 if ( wp_is_block_theme() ) {
 	$submenu['themes.php'][6] = array( _x( 'Editor', 'site editor menu item' ), 'edit_theme_options', 'site-editor.php' );
 } else {
-	$submenu['themes.php'][6] = array( _x( 'Patterns', 'patterns menu item' ), 'edit_theme_options', 'edit.php?post_type=wp_block' );
-}
-
-if ( ! wp_is_block_theme() && current_theme_supports( 'block-template-parts' ) ) {
-	$submenu['themes.php'][7] = array(
-		__( 'Template Parts' ),
-		'edit_theme_options',
-		'site-editor.php?path=/wp_template_part/all',
-	);
+	$submenu['themes.php'][6] = array( _x( 'Patterns', 'patterns menu item' ), 'edit_theme_options', 'site-editor.php?path=/patterns' );
 }
 
 $customize_url = add_query_arg( 'return', urlencode( remove_query_arg( wp_removable_query_args(), wp_unslash( $_SERVER['REQUEST_URI'] ) ) ), 'customize.php' );
 
 // Hide Customize link on block themes unless a plugin or theme
 // is using 'customize_register' to add a setting.
 if ( ! wp_is_block_theme() || has_action( 'customize_register' ) ) {
-	$position = ! wp_is_block_theme() && current_theme_supports( 'block-template-parts' ) ? 8 : 7;
-
-	$submenu['themes.php'][ $position ] = array( __( 'Customize' ), 'customize', esc_url( $customize_url ), '', 'hide-if-no-customize' );
+	$submenu['themes.php'][7] = array( __( 'Customize' ), 'customize', esc_url( $customize_url ), '', 'hide-if-no-customize' );
 }
 
 if ( current_theme_supports( 'menus' ) || current_theme_supports( 'widgets' ) ) {

src/wp-includes/functions.php

@@ -5400,7 +5400,7 @@ function wp_widgets_add_menu() {
 	}
 
 	$menu_name = __( 'Widgets' );
-	if ( wp_is_block_theme() || current_theme_supports( 'block-template-parts' ) ) {
+	if ( wp_is_block_theme() ) {
 		$submenu['themes.php'][] = array( $menu_name, 'edit_theme_options', 'widgets.php' );
 	} else {
 		$submenu['themes.php'][8] = array( $menu_name, 'edit_theme_options', 'widgets.php' );