fix: styles not applying on blocks added to widgets

This fixes the issue with CSS not being applied instantly to blocks
added to Widgets in Customizer or Widgets area.

Previously, it was working if you make another change and Publish your
changes from the Customizer but the current block status wasn't being
taken into consideration.

We remove the previously implemented `wp_registered_widgets` check as we
are already using `$widgets_used` to check for inactive widgets.

Fixes https://github.com/Codeinwp/otter-internals/issues/121`

inc/class-registration.php

@@ -1054,20 +1054,13 @@ public static function get_active_widgets_content() {
 			return $content;
 		}
 
-		global $wp_registered_widgets;
 		$valid_widgets = array();
 		$widget_data   = get_option( 'widget_block', array() );
 
-		// Loop through all widgets, and add any that are active.
-		foreach ( $wp_registered_widgets as $widget_name => $widget ) {
-			if ( ! in_array( $widget['id'], self::$widget_used, true ) ) {
-				continue;
-			}
-
-			$key = $widget['params'][0]['number'];
-
-			if ( isset( $widget_data[ $key ] ) ) {
-				$valid_widgets[] = (object) $widget_data[ $key ];
+		foreach ( self::$widget_used as $widget_id ) {
+			$widget_id = str_replace( 'block-', '', $widget_id );
+			if ( isset( $widget_data[ $widget_id ] ) ) {
+				$valid_widgets[] = (object) $widget_data[ $widget_id ];
 			}
 		}