gh-145668: Optimize FOR_ITER virtual iterators for bytes, bytearray, … #2327

Job	Run time
x86_64-apple-darwin/clang	14m 22s
x86_64-unknown-linux-gnu/gcc	9m 58s
aarch64-unknown-linux-gnu/gcc	7m 8s
x86_64-pc-windows-msvc/msvc-free-threading	4m 59s
x86_64-pc-windows-msvc/msvc	10m 14s
x86_64-unknown-linux-gnu/gcc-free-threading	8m 29s
aarch64-apple-darwin/clang	8m 55s
	1h 4m 5s

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