Clarify backport status of appearance-tools theme support (#48622)

Author: oandregal

lib/class-wp-theme-json-resolver-gutenberg.php

@@ -319,10 +319,15 @@ public static function get_theme_data( $deprecated = array(), $options = array()
 			// Classic themes without a theme.json don't support global duotone.
 			$theme_support_data['settings']['color']['defaultDuotone'] = false;
 
+			// BEGIN EXPERIMENTAL.
 			// Allow themes to enable appearance tools via theme_support.
+			// This feature was backported for WordPress 6.2 as of https://core.trac.wordpress.org/ticket/56487
+			// and then reverted as of https://core.trac.wordpress.org/ticket/57649
+			// Not to backport until the issues are resolved.
 			if ( current_theme_supports( 'appearance-tools' ) ) {
 				$theme_support_data['settings']['appearanceTools'] = true;
 			}
+			// END EXPERIMENTAL.
 		}
 		$with_theme_supports = new WP_Theme_JSON_Gutenberg( $theme_support_data );
 		$with_theme_supports->merge( static::$theme );