Fix missing int64_t definition (#4365) #5865

Job	Run time
git_checks	5s
format	26s
macos (macos-13, xcode14_2, x64, shared, serial)	7m 55s
ubuntu (ubuntu20.04, gcc8, mpich)	5m 27s
macos (macos-14, xcode15_4, arm64, shared, serial)	7m 58s
ubuntu (ubuntu20.04, gcc9, mpich)	20m 41s
macos (macos-14, xcode15_4, arm64, static, serial)	3m 7s
docker (ubuntu-bionic)	7m 4s
ubuntu (ubuntu20.04, gcc10, mpich)	17m 55s
CodeQL (cpp)	28m 16s
ubuntu (ubuntu20.04, clang6, mpich)	5m 18s
ubuntu (ubuntu20.04, clang10, mpich)	15m 5s
el8 (el8, icc, mpich)	23m 8s
ubuntu (ubuntu20.04, gcc8, ompi)	34m 50s
windows (win2019, shared, msmpi)	18m 44s
el8 (el8, oneapi, mpich)	21m 13s
windows (win2022, shared, msmpi)	19m 0s
ubuntu (ubuntu20.04, gcc8, serial)	9m 38s
windows (win2022, serial, windows-2022, vs2022)	13m 13s
ubuntu (ubuntu20.04, clang6, ompi)	25m 38s
windows (win2022, static, serial, windows-2022, vs2022)	12m 33s
ubuntu (ubuntu20.04, clang6, serial)	8m 23s
ubuntu (ubuntu20.04, gcc8, serial, static)	9m 17s
ubuntu (ubuntu22.04, rocm, serial, build_only)	3m 19s
ubuntu (ubuntu22.04, gcc11, mpich)	17m 47s
contract (examples)	1m 58s
contract (lammps)	4m 4s
contract (tau)	10m 38s
build_and_test	1s
	5h 52m 41s

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