[issue45260] Implement superinstruction UNPACK_SEQUENCE_ST

[zcpara]

Change by zcpara <zhangchaospecial at gmail.com>:


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keywords: +patch
pull_requests: +26910
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28519

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45260>
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