JIT

gh-115999: Use light-weight lock for UNPACK_SEQUENCE_LIST #97

Job	Run time
Interpreter (Debug)	7m 0s
i686-pc-windows-msvc/msvc (Debug)	18m 5s
Free-Threaded (Debug) (19)	10m 46s
i686-pc-windows-msvc/msvc (Release)	10m 57s
x86_64-pc-windows-msvc/msvc (Debug)	18m 31s
x86_64-pc-windows-msvc/msvc (Release)	10m 38s
aarch64-pc-windows-msvc/msvc (Debug)	5m 50s
aarch64-pc-windows-msvc/msvc (Release)	6m 1s
x86_64-apple-darwin/clang (Debug)	13m 44s
x86_64-apple-darwin/clang (Release)	14m 21s
aarch64-apple-darwin/clang (Debug)	11m 56s
aarch64-apple-darwin/clang (Release)	9m 39s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 32s
x86_64-unknown-linux-gnu/gcc (Release)	5m 27s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 12m 0s
aarch64-unknown-linux-gnu/gcc (Release)	34m 44s
	4h 17m 11s

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