compiler: fix scalar aliases from conditionals #7279

Job	Run time
pytest-ubuntu-py311-gcc11-noomp-base	54m 6s
pytest-ubuntu-py311-gcc11-noomp-adjoint	40m 34s
pytest-ubuntu-py312-gcc12-omp-base	1h 10m 26s
pytest-ubuntu-py312-gcc12-omp-adjoint	52m 13s
pytest-ubuntu-py39-gcc7-omp-base	55m 15s
pytest-ubuntu-py39-gcc7-omp-adjoint	40m 17s
pytest-ubuntu-py310-gcc10-noomp-base	52m 49s
pytest-ubuntu-py310-gcc10-noomp-adjoint	40m 21s
pytest-ubuntu-py312-gcc13-omp-base	1h 11m 56s
pytest-ubuntu-py312-gcc13-omp-adjoint	52m 22s
pytest-ubuntu-py39-gcc9-omp-base	54m 39s
pytest-ubuntu-py39-gcc9-omp-adjoint	40m 57s
pytest-osx-py312-clang-omp-base	37m 17s
pytest-docker-py39-gcc-omp-base	48m 0s
pytest-docker-py39-gcc-omp-adjoint	36m 58s
pytest-docker-py39-icx-omp-base	47m 36s
pytest-docker-py39-icx-omp-adjoint	42m 27s
	13h 58m 13s

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