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Invalid cast for alreadyAllocatedCPPObject in ConvertPythonToQt #704

Job	Run time
macOS (latest, 3.9, 5.9.*, debug)	14m 58s
oldschool (rockylinux, 9, release)	4m 39s
macOS (latest, 3.9, 5.9.*, release)	9m 0s
ubuntu (22.04)	13m 13s
ubuntu (24.04)	14m 27s
macOS (latest, 3.11, 5.12.*, debug)	12m 57s
windows (win32_mingw53, 3.6, x86, 5.11.*)	8m 7s
windows (win64_msvc2019_64, 3.13, x64, 5.15.*, PythonQtCore PythonQtGui PythonQtMultimedia)	5m 17s
oldschool (rockylinux, 9, debug)	4m 51s
windows (win64_msvc2017_64, 3.6, x64, 5.11.*)	6m 20s
windows (win64_mingw73, 3.10, 5.12.*, x64)	6m 47s
	1h 40m 36s

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