fix(stream): add the back pressure for sink node.

source/libs/stream/src/stream.c

@@ -362,7 +362,7 @@ int32_t tAppendDataToInputQueue(SStreamTask* pTask, SStreamQueueItem* pItem) {
            msgLen, ver, total, size + msgLen/1048576.0);
   } else if (type == STREAM_INPUT__DATA_BLOCK || type == STREAM_INPUT__DATA_RETRIEVE ||
              type == STREAM_INPUT__REF_DATA_BLOCK) {
-    if ((pTask->info.taskLevel == TASK_LEVEL__SOURCE) && (tInputQueueIsFull(pTask))) {
+    if (/*(pTask->info.taskLevel == TASK_LEVEL__SOURCE) && */(tInputQueueIsFull(pTask))) {
       qError("s-task:%s input queue is full, capacity:%d size:%d MiB, current(blocks:%d, size:%.2fMiB) abort",
              pTask->id.idStr, STREAM_TASK_INPUT_QUEUE_CAPACITY, STREAM_TASK_INPUT_QUEUE_CAPACITY_IN_SIZE, total,
              size);