[deepseek_r1] decrease default max_seq_len_to_capture from 8192->4096 to reduce prompt graph #1447
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ccrhx4
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The default max_seq_len_to_capture(8192) captures too many prompt graphs. As as result, the number of hpu blocks are decreased. It impacts the performance for long seq input, such as 8k/1k.
The change is aligned to yangulei@14c4b51