JIT

gh-131586: Avoid refcount contention in context managers #3107

Job	Run time
Interpreter (Debug)	9m 1s
Free-Threaded (Debug) (19)	14m 37s
i686-pc-windows-msvc/msvc (Debug)	20m 15s
i686-pc-windows-msvc/msvc (Release)	13m 33s
x86_64-pc-windows-msvc/msvc (Debug)	20m 8s
x86_64-pc-windows-msvc/msvc (Release)	13m 10s
aarch64-pc-windows-msvc/msvc (Debug)	18m 3s
aarch64-pc-windows-msvc/msvc (Release)	15m 42s
x86_64-apple-darwin/clang (Debug)	14m 26s
x86_64-apple-darwin/clang (Release)	9m 35s
aarch64-apple-darwin/clang (Debug)	8m 43s
aarch64-apple-darwin/clang (Release)	8m 6s
x86_64-unknown-linux-gnu/gcc (Debug)	9m 49s
x86_64-unknown-linux-gnu/gcc (Release)	6m 8s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 35s
aarch64-unknown-linux-gnu/gcc (Release)	6m 7s
	3h 14m 58s

Provide feedback