api: fix interpolate with complex dtype #96

Job	Run time
pytest-ubuntu-py312-gcc12-cxxomp-base	55m 24s
pytest-ubuntu-py312-gcc12-cxxomp-adjoint	38m 39s
pytest-ubuntu-py310-gcc14-omp-adjoint	31m 16s
pytest-ubuntu-py311-gcc10-noomp-adjoint	28m 3s
pytest-ubuntu-py310-gcc9-omp-adjoint	29m 59s
pytest-ubuntu-py310-gcc14-omp-base	43m 51s
pytest-ubuntu-py310-gcc9-omp-base	43m 9s
pytest-ubuntu-py311-gcc11-cxxnoomp-base	44m 3s
pytest-osx-py312-clang-omp-base	27m 31s
pytest-docker-py310-icx-omp-base	33m 27s
pytest-docker-py310-gcc-omp-arm64-adjoint	23m 32s
pytest-ubuntu-py311-gcc11-cxxnoomp-adjoint	28m 51s
pytest-docker-py310-gcc-omp-adjoint	27m 25s
pytest-ubuntu-py312-gcc13-omp-base	50m 47s
pytest-ubuntu-py311-gcc10-noomp-base	40m 54s
pytest-docker-py310-gcc-omp-arm64-base	30m 9s
pytest-docker-py310-gcc-omp-base	37m 56s
pytest-ubuntu-py312-gcc13-omp-adjoint	34m 39s
pytest-docker-py310-icx-omp-adjoint	29m 9s
pytest-ubuntu-py313-gcc14-omp-adjoint	34m 50s
pytest-ubuntu-py313-gcc14-omp-base	49m 58s
	12h 43m 32s

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