JIT

gh-115999: Add free-threaded specialization for FOR_ITER #2905

Job	Run time
Interpreter (Debug)	8m 27s
Free-Threaded (Debug) (19)	1m 37s
i686-pc-windows-msvc/msvc (Debug)	17m 58s
i686-pc-windows-msvc/msvc (Release)	11m 48s
x86_64-pc-windows-msvc/msvc (Debug)	19m 5s
x86_64-pc-windows-msvc/msvc (Release)	11m 43s
aarch64-pc-windows-msvc/msvc (Debug)	4m 59s
aarch64-pc-windows-msvc/msvc (Release)	6m 44s
x86_64-apple-darwin/clang (Debug)	49m 46s
x86_64-apple-darwin/clang (Release)	9m 1s
aarch64-apple-darwin/clang (Debug)	13m 59s
aarch64-apple-darwin/clang (Release)	49m 50s
x86_64-unknown-linux-gnu/gcc (Debug)	9m 7s
x86_64-unknown-linux-gnu/gcc (Release)	5m 55s
aarch64-unknown-linux-gnu/gcc (Debug)	49m 46s
aarch64-unknown-linux-gnu/gcc (Release)	7m 7s
	4h 36m 52s

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