fix(payment): harden payment and refund chains

composer.json

@@ -3,7 +3,7 @@
     "description": "AKSRT WordPress Theme",
     "type": "wordpress-theme",
     "require": {
-        "php": ">=7.4",
+        "php": ">=8.1",
         "stripe/stripe-php": "^16.1",
         "yansongda/pay": "^3.7",
         "yurunsoft/yurun-oauth-login": "~3.0"