JIT

gh-131586: Avoid refcount contention in context managers #3218

Job	Run time
Interpreter (Debug)	9m 10s
Free-Threaded (Debug) (19)	13m 35s
i686-pc-windows-msvc/msvc (Debug)	21m 27s
i686-pc-windows-msvc/msvc (Release)	12m 24s
x86_64-pc-windows-msvc/msvc (Debug)	23m 15s
x86_64-pc-windows-msvc/msvc (Release)	14m 3s
aarch64-pc-windows-msvc/msvc (Debug)	23m 8s
aarch64-pc-windows-msvc/msvc (Release)	16m 40s
x86_64-apple-darwin/clang (Debug)	19m 44s
x86_64-apple-darwin/clang (Release)	11m 34s
aarch64-apple-darwin/clang (Debug)	9m 42s
aarch64-apple-darwin/clang (Release)	9m 11s
x86_64-unknown-linux-gnu/gcc (Debug)	10m 24s
x86_64-unknown-linux-gnu/gcc (Release)	6m 59s
aarch64-unknown-linux-gnu/gcc (Debug)	6m 31s
aarch64-unknown-linux-gnu/gcc (Release)	5m 14s
	3h 33m 1s

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