JIT

GH-134584: Remove redundant refcount for `BINARY_OP_SUBSCR_STR_INT` #4663

Job	Run time
Interpreter (Debug)	6m 32s
Free-Threaded (Debug)	1s
JIT with tail calling interpreter	1s
${{ matrix.target }} (${{ ((matrix.debug && 'Debug') \|\| 'Release') }})	1s
JIT without optimizations (Debug)	1s
	6m 36s

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