fix(router): [Iatapay] make error status and error message optional (#5382)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/router/src/connector/iatapay.rs

@@ -149,7 +149,9 @@ impl ConnectorCommon for Iatapay {
             ErrorResponse {
                 status_code: res.status_code,
                 code: response.error,
-                message: response.message,
+                message: response
+                    .message
+                    .unwrap_or(consts::NO_ERROR_MESSAGE.to_string()),
                 reason: response.reason,
                 attempt_status: None,
                 connector_transaction_id: None,

crates/router/src/connector/iatapay/transformers.rs

@@ -581,9 +581,9 @@ impl TryFrom<types::RefundsResponseRouterData<api::RSync, RefundResponse>>
 
 #[derive(Debug, Deserialize, Serialize)]
 pub struct IatapayErrorResponse {
-    pub status: u16,
+    pub status: Option<u16>,
     pub error: String,
-    pub message: String,
+    pub message: Option<String>,
     pub reason: Option<String>,
 }