Fix aligner error

See shashikg#59 (comment)

Error: No position encodings are defined for positions >= 448, but got position 454

whisper_s2t/backends/tensorrt/model.py

@@ -201,10 +201,11 @@ def align_words(self, features, texts, text_tokens, sot_seqs, seq_lens, seg_meta
 
  token_alignments = [[] for _ in seg_metadata]
  for start_seq, req_idx in start_seq_wise_req.items():
+ adjusted_num_frames = [min(frame, MAX_TEXT_TOKEN_LENGTH) for frame in seq_lens[req_idx].detach().cpu().numpy()]
  res = self.aligner_model.align(ctranslate2.StorageView.from_array(features[req_idx]), 
  start_sequence=list(start_seq), 
  text_tokens=[text_tokens[_] for _ in req_idx],
- num_frames=list(seq_lens[req_idx].detach().cpu().numpy()), 
+ num_frames=adjusted_num_frames,
  median_filter_width=7)
 
  for _res, _req_idx in zip(res, req_idx):