fix(csharp/src/Drivers/Apache): detect sever error when polling for r…

…esponse (#2355)

Checks the return status when polling for response. 
* Must be in the `FINISHED_STATE`. Other states are invalid after
polling.
* Difficult to write tests for this without "abusing" the server to
invoke a server error.

csharp/src/Drivers/Apache/Hive2/HiveServer2Connection.cs

@@ -145,6 +145,14 @@ internal static async Task PollForResponseAsync(TOperationHandle operationHandle
                 TGetOperationStatusReq request = new(operationHandle);
                 statusResponse = await client.GetOperationStatus(request, cancellationToken);
             } while (statusResponse.OperationState == TOperationState.PENDING_STATE || statusResponse.OperationState == TOperationState.RUNNING_STATE);
+
+            // Must be in the finished state to be valid. If not, typically a server error or timeout has occurred.
+            if (statusResponse.OperationState != TOperationState.FINISHED_STATE)
+            {
+                throw new HiveServer2Exception(statusResponse.ErrorMessage, AdbcStatusCode.InvalidState)
+                    .SetSqlState(statusResponse.SqlState)
+                    .SetNativeError(statusResponse.ErrorCode);
+            }
         }
 
         private string GetInfoTypeStringValue(TGetInfoType infoType)