JIT

gh-143732: allow dict subclasses to be specialized #6372

Job	Run time
x86_64-apple-darwin/clang (Debug)	39m 37s
x86_64-apple-darwin/clang (Release)	30m 18s
JIT with tail calling interpreter	4m 49s
JIT without optimizations (Debug)	3m 45s
Free-Threaded (Debug)	3m 50s
Interpreter (Debug)	12m 56s
aarch64-unknown-linux-gnu/gcc (Debug)	9m 56s
x86_64-unknown-linux-gnu/gcc (Release)	8m 32s
aarch64-apple-darwin/clang (Release)	17m 33s
x86_64-unknown-linux-gnu/gcc (Debug)	14m 14s
x86_64-pc-windows-msvc/msvc (Release)	15m 39s
aarch64-apple-darwin/clang (Debug)	19m 44s
aarch64-unknown-linux-gnu/gcc (Release)	6m 36s
x86_64-pc-windows-msvc/msvc (Debug)	30m 8s
aarch64-pc-windows-msvc/msvc (Debug)	25m 31s
i686-pc-windows-msvc/msvc (Release)	15m 23s
aarch64-pc-windows-msvc/msvc (Release)	18m 6s
i686-pc-windows-msvc/msvc (Debug)	25m 29s
	5h 2m 6s

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