fix: PHP errors and clean up error_log statements

- Fixed redirect_wc_pages_to_spa: added spa_mode check (only redirect when 'full')
- Fixed PHP fatal error: use get_queried_object() instead of global $product
- Removed all error_log debug statements from codebase
- Fixed broken syntax in PaymentGatewaysProvider.php after error_log removal

includes/Core/Notifications/EmailRenderer.php

@@ -86,13 +86,11 @@ class EmailRenderer {
 		
 		if (!$template) {
 			if (defined('WP_DEBUG') && WP_DEBUG) {
-				error_log('[EmailRenderer] No template found for event: ' . $event_id . ', recipient: ' . $recipient_type);
 			}
 			return null;
 		}
 		
 		if (defined('WP_DEBUG') && WP_DEBUG) {
-			error_log('[EmailRenderer] Template found - Subject: ' . ($template['subject'] ?? 'no subject'));
 		}
 		
 		// Get design template preference