JIT

gh-143732: allow dict subclasses to be specialized #6396

Job	Run time
Interpreter (Debug)	11m 40s
x86_64-apple-darwin/clang (Debug)	32m 23s
JIT with tail calling interpreter	4m 20s
aarch64-apple-darwin/clang (Debug)	16m 1s
JIT without optimizations (Debug)	3m 51s
Free-Threaded (Debug)	3m 52s
x86_64-unknown-linux-gnu/gcc (Debug)	13m 15s
aarch64-apple-darwin/clang (Release)	14m 2s
x86_64-unknown-linux-gnu/gcc (Release)	7m 53s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 41s
aarch64-unknown-linux-gnu/gcc (Release)	6m 12s
x86_64-apple-darwin/clang (Release)	24m 18s
i686-pc-windows-msvc/msvc (Release)	16m 46s
aarch64-pc-windows-msvc/msvc (Release)	17m 57s
x86_64-pc-windows-msvc/msvc (Release)	15m 46s
i686-pc-windows-msvc/msvc (Debug)	25m 30s
aarch64-pc-windows-msvc/msvc (Debug)	25m 27s
x86_64-pc-windows-msvc/msvc (Debug)	25m 43s
	4h 33m 37s

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