gh-125038: redundant GET_ITER and GET_AITER are removed from genexpr … #10

Job	Run time
Interpreter (Debug)	7m 9s
Free-Threaded (Debug) (19)	11m 37s
i686-pc-windows-msvc/msvc (Debug)	18m 36s
i686-pc-windows-msvc/msvc (Release)	21m 31s
x86_64-pc-windows-msvc/msvc (Debug)	17m 37s
x86_64-pc-windows-msvc/msvc (Release)	21m 43s
aarch64-pc-windows-msvc/msvc (Debug)	5m 3s
aarch64-pc-windows-msvc/msvc (Release)	6m 16s
x86_64-apple-darwin/clang (Debug)	16m 43s
x86_64-apple-darwin/clang (Release)	1h 30m 14s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 49s
x86_64-unknown-linux-gnu/gcc (Release)	18m 11s
x86_64-unknown-linux-gnu/clang (Debug)	8m 7s
x86_64-unknown-linux-gnu/clang (Release)	13m 4s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 15m 22s
aarch64-unknown-linux-gnu/gcc (Release)	1h 30m 13s
aarch64-unknown-linux-gnu/clang (Debug)	1h 10m 28s
aarch64-unknown-linux-gnu/clang (Release)	37m 44s
	8h 57m 27s

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