JIT

gh-134584: Eliminate redundant refcounting from `UNPACK_SEQUENCE` family #4748

Job	Run time
Interpreter (Debug)	44s
${{ matrix.target }} (${{ ((matrix.debug && 'Debug') \|\| 'Release') }})	0s
Free-Threaded (Debug)	0s
JIT with tail calling interpreter	0s
JIT without optimizations (Debug)	0s
	44s

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