JIT

gh-143732: allow dict subclasses to be specialized #6366

Job	Run time
Interpreter (Debug)	5m 16s
JIT without optimizations (Debug)	3m 29s
aarch64-unknown-linux-gnu/gcc (Debug)	5m 18s
JIT with tail calling interpreter	4m 47s
x86_64-apple-darwin/clang (Release)	5m 15s
Free-Threaded (Debug)	3m 57s
aarch64-pc-windows-msvc/msvc (Debug)	5m 11s
x86_64-apple-darwin/clang (Debug)	5m 21s
i686-pc-windows-msvc/msvc (Release)	5m 7s
x86_64-pc-windows-msvc/msvc (Debug)	5m 2s
x86_64-unknown-linux-gnu/gcc (Release)	5m 16s
aarch64-unknown-linux-gnu/gcc (Release)	5m 18s
x86_64-unknown-linux-gnu/gcc (Debug)	5m 11s
aarch64-apple-darwin/clang (Release)	5m 17s
aarch64-apple-darwin/clang (Debug)	5m 12s
i686-pc-windows-msvc/msvc (Debug)	5m 3s
aarch64-pc-windows-msvc/msvc (Release)	5m 10s
x86_64-pc-windows-msvc/msvc (Release)	5m 7s
	1h 30m 17s

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