Customize: Prevent PHP notice in Customizer when using block theme.

Use the `customize_panel_active` filter to deactivate the Menus panel instead of overriding the `check_capabilities` method. This ensures the panel remains registered but is still hidden.

See #54888.
Fixes #54905.


git-svn-id: https://develop.svn.wordpress.org/trunk@54419 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/customize/class-wp-customize-nav-menus-panel.php

@@ -98,27 +98,4 @@ class WP_Customize_Nav_Menus_Panel extends WP_Customize_Panel {
 		<li class="customize-control-title customize-section-title-nav_menus-heading"><?php _e( 'Menus' ); ?></li>
 		<?php
 	}
-
-	/**
-	 * Checks required user capabilities and whether the theme has the
-	 * feature support required by the panel.
-	 *
-	 * @since 5.9.0
-	 *
-	 * @return bool False if theme doesn't support the panel or the user doesn't have the capability.
-	 */
-	public function check_capabilities() {
-		/*
-		 * WP_Customize_Panel::$theme_supports only supports checking one
-		 * theme_supports, so instead we override check_capabilities().
-		 */
-		if (
-			! current_theme_supports( 'menus' ) &&
-			! current_theme_supports( 'widgets' )
-		) {
-			return false;
-		}
-
-		return parent::check_capabilities();
-	}
 }