JIT

gh-131798: JIT: Narrow the return type of `isinstance` for some known arguments #3444

Job	Run time
Interpreter (Debug)	10m 12s
i686-pc-windows-msvc/msvc (Debug)	24m 32s
i686-pc-windows-msvc/msvc (Release)	14m 40s
x86_64-pc-windows-msvc/msvc (Debug)	23m 13s
x86_64-pc-windows-msvc/msvc (Release)	14m 23s
aarch64-pc-windows-msvc/msvc (Debug)	22m 35s
aarch64-pc-windows-msvc/msvc (Release)	23m 6s
x86_64-apple-darwin/clang (Debug)	15m 13s
x86_64-apple-darwin/clang (Release)	10m 47s
aarch64-apple-darwin/clang (Debug)	9m 54s
aarch64-apple-darwin/clang (Release)	9m 54s
x86_64-unknown-linux-gnu/gcc (Debug)	11m 2s
x86_64-unknown-linux-gnu/gcc (Release)	6m 25s
aarch64-unknown-linux-gnu/gcc (Debug)	8m 17s
aarch64-unknown-linux-gnu/gcc (Release)	6m 27s
	3h 30m 40s

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