wp_admin_bar_edit_site_menu( WP_Admin_Bar $wp_admin_bar )

Source

function wp_admin_bar_edit_site_menu( $wp_admin_bar ) {
	// Don't show if a block theme is not activated.
	if ( ! wp_is_block_theme() ) {
		return;
	}
	// Don't show for users who can't edit theme options.
	if ( ! current_user_can( 'edit_theme_options' ) ) {
		return;
	}
	$wp_admin_bar->add_node(
		array(
			'id'    => 'site-editor',
			'title' => __( 'Edit Site' ),
			'href'  => admin_url( 'site-editor.php' ),
		)
	);
}

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