tests

Make reinitialize_command's return type Generic when "command" argument is a Command #1233

Job	Run time
ci_setuptools (3.10, ubuntu-latest)	4m 0s
test (3.9, ubuntu-latest)	46s
collateral (diffcov)	57s
test_cygwin (39, windows-latest)	4m 52s
test (3.9, macos-latest)	1m 8s
test_msvc_python_mingw	2m 16s
collateral (docs)	28s
test (3.9, windows-latest)	45s
test (3.13, ubuntu-latest)	1m 0s
test_msys2_mingw (mingw64, x86_64, gcc, g++)	1m 38s
test (3.13, macos-latest)	59s
test_msys2_mingw (mingw32, i686, gcc, g++)	1m 56s
test (3.13, windows-latest)	46s
test_msys2_mingw (ucrt64, ucrt-x86_64, gcc, g++)	1m 42s
test (3.10, ubuntu-latest)	50s
test_msys2_mingw (clang64, clang-x86_64, clang, clang++)	1m 42s
test (3.11, ubuntu-latest)	45s
test (3.12, ubuntu-latest)	52s
test (3.14, ubuntu-latest)	1m 6s
test (pypy3.10, ubuntu-latest)	1m 0s
check	2s
release	0s
	29m 30s

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