gh-145376: Fix refleaks and double decref for code in Python/ (#145666) #2337

Job	Run time
x86_64-pc-windows-msvc/msvc	10m 1s
aarch64-apple-darwin/clang	8m 9s
x86_64-apple-darwin/clang	17m 12s
x86_64-unknown-linux-gnu/gcc-free-threading	8m 30s
x86_64-unknown-linux-gnu/gcc	10m 11s
aarch64-unknown-linux-gnu/gcc	7m 26s
x86_64-pc-windows-msvc/msvc-free-threading	5m 10s
	1h 6m 39s

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