fix: wrong error code sometimes (#847)

* fix: wrong error code sometimes

* fix: keep error message

Author: yoyo930021

open_im_sdk/caller.go

@@ -224,8 +224,8 @@ func call(callback open_im_sdk_callback.Base, operationID string, fn any, args .
 	go func() {
 		res, err := call_(operationID, fn, args...)
 		if err != nil {
-			if code, ok := err.(errs.CodeError); ok {
-				callback.OnError(int32(code.Code()), code.Error())
+			if code, ok := errs.Unwrap(err).(errs.CodeError); ok {
+				callback.OnError(int32(code.Code()), err.Error())
 			} else {
 				callback.OnError(sdkerrs.UnknownCode, fmt.Sprintf("error %T not implement CodeError: %s", err, err))
 			}
@@ -445,8 +445,8 @@ func messageCall_(callback open_im_sdk_callback.SendMsgCallBack, operationID str
 	}
 	if lastErr {
 		if last := outVals[len(outVals)-1]; last != nil {
-			if code, ok := last.(error).(errs.CodeError); ok {
-				callback.OnError(int32(code.Code()), code.Error())
+			if code, ok := errs.Unwrap(last.(error)).(errs.CodeError); ok {
+				callback.OnError(int32(code.Code()), last.(error).Error())
 			} else {
 				callback.OnError(sdkerrs.UnknownCode, fmt.Sprintf("error %T not implement CodeError: %s", last.(error), last.(error).Error()))
 			}