JIT

gh-131586: Avoid refcount contention in context managers #3199

Job	Run time
Interpreter (Debug)	9m 12s
Free-Threaded (Debug) (19)	13m 53s
i686-pc-windows-msvc/msvc (Debug)	20m 14s
i686-pc-windows-msvc/msvc (Release)	12m 31s
x86_64-pc-windows-msvc/msvc (Debug)	18m 31s
x86_64-pc-windows-msvc/msvc (Release)	12m 22s
aarch64-pc-windows-msvc/msvc (Debug)	19m 17s
aarch64-pc-windows-msvc/msvc (Release)	13m 36s
x86_64-apple-darwin/clang (Debug)	12m 59s
x86_64-apple-darwin/clang (Release)	9m 19s
aarch64-apple-darwin/clang (Debug)	8m 34s
aarch64-apple-darwin/clang (Release)	11m 42s
x86_64-unknown-linux-gnu/gcc (Debug)	10m 5s
x86_64-unknown-linux-gnu/gcc (Release)	1h 17m 58s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 52s
aarch64-unknown-linux-gnu/gcc (Release)	6m 20s
	4h 24m 25s

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