fix: Fun-ASR-Nano batch_size check - use len(data_in) instead of kwargs batch_size_ms

Author: xiaoyunchong.xyc

examples/industrial_data_pretraining/fun_asr_nano/model.py

@@ -470,7 +470,7 @@ def inference_prepare(
     ):
         meta_data = {}
 
-        if kwargs.get("batch_size", 1) > 1:
+        if isinstance(data_in, (list, tuple)) and len(data_in) > 1:
             raise NotImplementedError("batch decoding is not implemented")
 
         contents = self.data_template(data_in[0])