JIT

gh-134584: Remove redundant refcount from _BINARY_OP_ADD_UNICODE #4647

Job	Run time
Interpreter (Debug)	10m 40s
JIT without optimizations (Debug) (21)	12m 17s
JIT with tail calling interpreter (21)	4m 8s
Free-Threaded (Debug) (21)	16m 48s
x86_64-pc-windows-msvc/msvc (Debug)	25m 38s
i686-pc-windows-msvc/msvc (Release)	14m 35s
aarch64-apple-darwin/clang (Debug)	13m 57s
aarch64-pc-windows-msvc/msvc (Release)	17m 39s
x86_64-unknown-linux-gnu/gcc (Debug)	12m 1s
x86_64-apple-darwin/clang (Debug)	22m 42s
aarch64-pc-windows-msvc/msvc (Debug)	25m 48s
i686-pc-windows-msvc/msvc (Debug)	22m 19s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 7s
aarch64-unknown-linux-gnu/gcc (Release)	6m 38s
aarch64-apple-darwin/clang (Release)	12m 16s
x86_64-pc-windows-msvc/msvc (Release)	15m 1s
x86_64-unknown-linux-gnu/gcc (Release)	8m 9s
x86_64-apple-darwin/clang (Release)	18m 32s
	4h 27m 15s

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