JIT

gh-141504: Refactor policy object into a single opt_config #5000

Job	Run time
Interpreter (Debug)	53s
Free-Threaded (Debug)	-1s
JIT without optimizations (Debug)	-1s
${{ matrix.target }} (${{ ((matrix.debug && 'Debug') \|\| 'Release') }})	-1s
JIT with tail calling interpreter	-1s
	49s

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