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/Compat/PaymentGatewaysProvider.php

@@ -391,24 +391,15 @@ class PaymentGatewaysProvider {
         
         $new_settings = array_merge($current_settings, $settings);
         
-        // Debug logging
-        error_log(sprintf('[WooNooW] Saving gateway %s settings: %s', $gateway_id, json_encode($settings)));
-        error_log(sprintf('[WooNooW] Current enabled: %s, New enabled: %s', 
-            isset($current_settings['enabled']) ? $current_settings['enabled'] : 'not set',
-            isset($new_settings['enabled']) ? $new_settings['enabled'] : 'not set'
-        ));
-        
         // Update gateway settings directly
         $gateway->settings = $new_settings;
         
         // Save to database using WooCommerce's method
         $saved = update_option($gateway->get_option_key(), $gateway->settings, 'yes');
-        error_log(sprintf('[WooNooW] update_option returned: %s', $saved ? 'true' : 'false'));
         
         // Update the enabled property specifically (WooCommerce does this)
         if (isset($new_settings['enabled'])) {
             $gateway->enabled = $new_settings['enabled'];
-            error_log(sprintf('[WooNooW] Set gateway->enabled to: %s', $gateway->enabled));
         }
         
         // Re-enable HTTP requests