fix normal token with <>

tokenization_cpmbee.py

@@ -236,6 +236,7 @@ class CpmBeeTokenizer(PreTrainedTokenizer):
                     tail = sentence_split.pop(-1)
                     sentence_split[-1] += tail
                     sentence_split.append(c)
+                    is_special_token = False
                 elif c == ">":
                     # end of special token
                     sentence_split[-1] += c