api: fix handling of multiple conditions for buffering #611

Job	Run time
pytest-docker-py310-gcc-omp-adjoint	31m 20s
pytest-docker-py310-icx-omp-adjoint	31m 24s
pytest-docker-py310-gcc-omp-base	40m 35s
pytest-ubuntu-py312-gcc12-cxxomp-base	57m 13s
pytest-docker-py310-gcc-omp-arm64-base	34m 7s
pytest-ubuntu-py313-gcc14-omp-adjoint	40m 21s
pytest-ubuntu-py312-gcc13-omp-base	58m 23s
pytest-ubuntu-py310-gcc9-omp-base	49m 55s
pytest-osx-py312-clang-omp-base	31m 14s
pytest-ubuntu-py312-gcc13-omp-adjoint	39m 20s
pytest-ubuntu-py310-gcc14-omp-base	47m 49s
pytest-docker-py310-gcc-omp-arm64-adjoint	26m 37s
pytest-ubuntu-py310-gcc14-omp-adjoint	36m 16s
pytest-docker-py310-icx-omp-base	44m 52s
pytest-ubuntu-py310-gcc9-omp-adjoint	37m 36s
pytest-ubuntu-py313-gcc14-omp-base	50m 5s
pytest-ubuntu-py312-gcc12-cxxomp-adjoint	41m 21s
pytest-ubuntu-py311-gcc10-noomp-base	34m 12s
pytest-ubuntu-py311-gcc11-cxxnoomp-base	50m 38s
pytest-ubuntu-py311-gcc11-cxxnoomp-adjoint	33m 24s
pytest-ubuntu-py311-gcc10-noomp-adjoint	31m 25s
	14h 8m 7s

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