JIT

GH-127705: Add debug mode for `_PyStackRef`s inspired by HPy debug mode #2387

Job	Run time
Interpreter (Debug)	7m 35s
Free-Threaded (Debug) (19)	12m 7s
i686-pc-windows-msvc/msvc (Debug)	11m 54s
i686-pc-windows-msvc/msvc (Release)	11m 25s
x86_64-pc-windows-msvc/msvc (Debug)	11m 58s
x86_64-pc-windows-msvc/msvc (Release)	9m 50s
aarch64-pc-windows-msvc/msvc (Debug)	5m 16s
aarch64-pc-windows-msvc/msvc (Release)	6m 37s
x86_64-apple-darwin/clang (Debug)	12m 17s
x86_64-apple-darwin/clang (Release)	8m 26s
aarch64-apple-darwin/clang (Debug)	8m 47s
aarch64-apple-darwin/clang (Release)	10m 35s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 32s
x86_64-unknown-linux-gnu/gcc (Release)	6m 34s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 4s
aarch64-unknown-linux-gnu/gcc (Release)	5m 46s
	2h 25m 43s

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