Internal: Changed the Optimized Markup experiment to a hidden experim…

…ent [ED-14690] (elementor#27367)

core/experiments/manager.php

@@ -481,6 +481,7 @@ private function add_default_features() {
 			'title' => esc_html__( 'Optimized Markup', 'elementor' ),
 			'tag' => esc_html__( 'Performance', 'elementor' ),
 			'description' => esc_html__( 'Reduce the DOM size by eliminating HTML tags in various elements and widgets. This experiment includes markup changes so it might require updating custom CSS/JS code and cause compatibility issues with third party plugins.', 'elementor' ),
+			static::TYPE_HIDDEN => true,
 			'release_status' => self::RELEASE_STATUS_DEV,
 			'default' => self::STATE_INACTIVE,
 		] );