feat: support query array in httpx.Parse (#4440)

rest/httpx/util.go

@@ -20,10 +20,16 @@ func GetFormValues(r *http.Request) (map[string]any, error) {
 	}
 
 	params := make(map[string]any, len(r.Form))
-	for name := range r.Form {
-		formValue := r.Form.Get(name)
-		if len(formValue) > 0 {
-			params[name] = formValue
+	for name, values := range r.Form {
+		filtered := make([]string, 0, len(values))
+		for _, v := range values {
+			if len(v) > 0 {
+				filtered = append(filtered, v)
+			}
+		}
+
+		if len(filtered) > 0 {
+			params[name] = filtered
 		}
 	}