JIT

GH-134584: Remove redundant refcount for `BINARY_OP_SUBSCR_STR_INT` (… #6864

Job	Run time
Interpreter (Debug)	10m 30s
Free-Threaded (Debug) (21)	16m 20s
JIT without optimizations (Debug) (21)	12m 18s
JIT with tail calling interpreter (21)	4m 17s
i686-pc-windows-msvc/msvc (Release)	13m 34s
aarch64-pc-windows-msvc/msvc (Debug)	24m 46s
x86_64-pc-windows-msvc/msvc (Debug)	24m 36s
x86_64-apple-darwin/clang (Debug)	23m 58s
aarch64-apple-darwin/clang (Release)	12m 13s
aarch64-pc-windows-msvc/msvc (Release)	18m 52s
i686-pc-windows-msvc/msvc (Debug)	25m 6s
x86_64-unknown-linux-gnu/gcc (Release)	8m 2s
x86_64-apple-darwin/clang (Release)	28m 7s
aarch64-apple-darwin/clang (Debug)	12m 14s
aarch64-unknown-linux-gnu/gcc (Release)	6m 29s
x86_64-pc-windows-msvc/msvc (Release)	13m 25s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 23s
x86_64-unknown-linux-gnu/gcc (Debug)	12m 16s
	4h 35m 26s

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