JIT

gh-111178: fix UBSan failures for `_PyExecutorObject` (#131610) #2993

Job	Run time
Interpreter (Debug)	8m 52s
Free-Threaded (Debug) (19)	14m 12s
i686-pc-windows-msvc/msvc (Debug)	19m 28s
i686-pc-windows-msvc/msvc (Release)	12m 23s
x86_64-pc-windows-msvc/msvc (Debug)	20m 7s
x86_64-pc-windows-msvc/msvc (Release)	11m 18s
aarch64-pc-windows-msvc/msvc (Debug)	4m 29s
aarch64-pc-windows-msvc/msvc (Release)	5m 55s
x86_64-apple-darwin/clang (Debug)	14m 15s
x86_64-apple-darwin/clang (Release)	10m 19s
aarch64-apple-darwin/clang (Debug)	10m 6s
aarch64-apple-darwin/clang (Release)	10m 36s
x86_64-unknown-linux-gnu/gcc (Debug)	9m 57s
x86_64-unknown-linux-gnu/gcc (Release)	6m 8s
aarch64-unknown-linux-gnu/gcc (Debug)	10m 1s
aarch64-unknown-linux-gnu/gcc (Release)	7m 33s
	2h 55m 39s

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