Fix constraint arena construction #2739

Job	Run time
codespell	11s
examples_clang-format	8s
copyright_check	7s
ubuntu-latest_g++_cxx14_relwithdebinfo_preview=OFF	19m 10s
ubuntu-20.04_g++_cxx17_release_preview=ON	16m 0s
ubuntu-20.04_g++-10_cxx20_debug_preview=ON	13m 30s
python_module_test_ubuntu_latest	30s
windows_cl2019_cxx14_relwithdebinfo_preview=ON	14m 6s
ubuntu-22.04_g++-11_cxx20_release_preview=ON-DBUILD_SHARED_LIBS=OFF	17m 13s
macos-12_clang++_cxx14_relwithdebinfo_preview=ON	23m 25s
windows_cl2019_cxx20_release_preview=ON-DBUILD_SHARED_LIBS=OFF	21m 8s
macos-13_clang++_cxx20_release_preview=ON-DBUILD_SHARED_LIBS=OFF	12m 4s
windows_cl2022_cxx17_relwithdebinfo_preview=OFF	16m 5s
examples_ubuntu-latest_g++_cxx14_relwithdebinfo_preview=OFF	3m 38s
examples_ubuntu-20.04_g++_cxx17_release_preview=ON	3m 38s
examples_macos-12_clang++_cxx14_relwithdebinfo_preview=ON	4m 18s
examples_ubuntu-20.04_g++-10_cxx20_debug_preview=ON	4m 13s
examples_windows_cl2019_cxx14_relwithdebinfo_preview=ON	5m 39s
examples_windows_cl2022_cxx17_relwithdebinfo_preview=OFF	6m 16s
documentation	1m 6s
pages	0s
	3h 2m 25s

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