Fix HuggingFaceTokenizerAdapter to match working implementation

adapter.py

@@ -538,6 +538,7 @@ class HuggingFaceTokenizerAdapter:
                 chars = [self.inv_vocab.get(int(t), '') for t in seq if self.inv_vocab.get(int(t), '') not in {'-', '*', '<', '>'} and self.inv_vocab.get(int(t), '') != '']
                 # Use res_to_seq for formatting, pass (sequence, length) tuple as in original code
                 # The length is not always available, so use len(chars) as fallback
+                from extra_utils import res_to_seq
                 formatted = res_to_seq([ ''.join(chars), len(chars) ], mode='restore')
                 decoded.append(formatted)
             return decoded