fix(storefront): purchase_confirm 支付fetch改绝对路径——.dspy非Jinja2渲染,{{entire_url()}}原样进浏览器导致支付按钮无响应

wwwroot/storefront/api/purchase_confirm.dspy

@@ -106,7 +106,7 @@ else:
             )
         pay_script += (
             "var btn=this; btn.disabled=true;"
-            "fetch('{{entire_url(\"./api/purchase_realtime.dspy\")}}',"
+            "fetch('/product_management/storefront/api/purchase_realtime.dspy',"
             "{method:'POST',body:params}).then(function(r){return r.json()})"
             ".then(function(msg){btn.disabled=false;"
             "if(msg.widgettype){bricks.widgetBuild(msg).then(function(w){if(w)w.open()})}"