Add back the function

src/wp-includes/script-modules.php

@@ -8,6 +8,21 @@
  * @subpackage Script Modules
  */
 
+/**
+ * Retrieves the main WP_Script_Modules instance.
+ *
+ * This function provides access to the WP_Script_Modules instance, creating one
+ * if it doesn't exist yet.
+ *
+ * @since 6.5.0
+ *
+ * @return WP_Script_Modules The main WP_Script_Modules instance.
+ */
+function wp_script_modules(): WP_Script_Modules {
+	return WP_Script_Modules::get_instance();
+}
+
+
 /**
  * Registers the script module if no script module with that script module
  * identifier has already been registered.
@@ -40,7 +55,7 @@
  *                                    If $version is set to null, no version is added.
  */
 function wp_register_script_module( string $id, string $src, array $deps = array(), $version = false ) {
-	WP_Script_Modules::get_instance()->register( $id, $src, $deps, $version );
+	wp_script_modules()->register( $id, $src, $deps, $version );
 }
 
 /**
@@ -77,7 +92,7 @@ function wp_register_script_module( string $id, string $src, array $deps = array
  *                                    If $version is set to null, no version is added.
  */
 function wp_enqueue_script_module( string $id, string $src = '', array $deps = array(), $version = false ) {
-	WP_Script_Modules::get_instance()->enqueue( $id, $src, $deps, $version );
+	wp_script_modules()->enqueue( $id, $src, $deps, $version );
 }
 
 /**
@@ -88,5 +103,5 @@ function wp_enqueue_script_module( string $id, string $src = '', array $deps = a
  * @param string $id The identifier of the script module.
  */
 function wp_dequeue_script_module( string $id ) {
-	WP_Script_Modules::get_instance()->dequeue( $id );
+	wp_script_modules()->dequeue( $id );
 }

src/wp-settings.php

@@ -378,7 +378,7 @@
 require ABSPATH . WPINC . '/script-modules.php';
 require ABSPATH . WPINC . '/interactivity-api.php';
 
-WP_Script_Modules::get_instance()->add_hooks();
+wp_script_modules()->add_hooks();
 
 $GLOBALS['wp_embed'] = new WP_Embed();