Enable complex coefficients for SelfHealingOverlap estimator #7350

Job	Run time
spack-centos-stream (GCC11-NoMPI-Debug-Real)	7m 10s
spack-centos-stream (GCC11-NoMPI-NoOMP-Real)	10m 58s
macos (macOS-GCC14-NoMPI-Real)	5m 56s
spack-centos-stream (GCC11-NoMPI-NoOMP-Complex)	17m 50s
linux (GCC9-NoMPI-Debug-Real)	5m 17s
spack-centos-stream (GCC11-NoMPI-Sandbox-Real)	4m 7s
linux (GCC9-NoMPI-NoOMP-Real)	9m 0s
linux (GCC9-NoMPI-NoOMP-Complex)	15m 42s
linux (GCC9-MPI-Sandbox-Real)	3m 37s
linux (GCC9-NoMPI-Sandbox-Complex)	3m 54s
linux (GCC9-MPI-Gcov-Real)	10m 48s
linux (GCC9-MPI-Gcov-Complex)	26m 2s
linux (GCC12-NoMPI-Werror-Real)	11m 21s
linux (GCC12-NoMPI-Werror-Complex)	18m 50s
linux (GCC12-NoMPI-Werror-Real-Mixed)	11m 3s
linux (GCC12-NoMPI-Werror-Complex-Mixed)	11m 18s
linux (Clang14-NoMPI-ASan-Real)	15m 5s
linux (Clang14-NoMPI-ASan-Complex)	24m 41s
linux (Clang14-NoMPI-UBSan-Real)	12m 15s
linux (Clang16-NoMPI-Offload-Real)	14m 27s
linux (Clang16-NoMPI-Offload-Complex)	22m 56s
	4h 22m 17s

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