Docs: Add `@since` to `wp_enqueue_classic_theme_styles()` docblock.

Follow-up to [54358].

Props kebbet.
See #55646.
Built from https://develop.svn.wordpress.org/trunk@54359


git-svn-id: http://core.svn.wordpress.org/trunk@53918 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/script-loader.php

@@ -3645,6 +3645,8 @@ function _wp_theme_json_webfonts_handler() {
  * Loads classic theme styles on classic themes.
  *
  * This is needed for backwards compatibility for button blocks specifically.
+ *
+ * @since 6.1.0
  */
 function wp_enqueue_classic_theme_styles() {
 	if ( ! wp_is_block_theme() ) {

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-beta2-54358';
+$wp_version = '6.1-beta2-54359';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.