gh-146558: optimize dict access with objects with known hash #2547

Job	Run time
x86_64-pc-windows-msvc/msvc	9m 39s
aarch64-apple-darwin/clang	11m 10s
x86_64-pc-windows-msvc/msvc-free-threading	5m 8s
x86_64-unknown-linux-gnu/gcc-free-threading	8m 44s
x86_64-unknown-linux-gnu/gcc	9m 47s
aarch64-unknown-linux-gnu/gcc	7m 29s
x86_64-apple-darwin/clang	19m 33s
	1h 11m 30s

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