dsl: Fix missing sympy assumptions during rebuilding #6926

Job	Run time
pytest-ubuntu-py311-gcc11-noomp-base	50m 46s
pytest-ubuntu-py311-gcc11-noomp-adjoint	37m 39s
pytest-ubuntu-py312-gcc12-omp-base	1h 7m 57s
pytest-ubuntu-py312-gcc12-omp-adjoint	47m 54s
pytest-ubuntu-py39-gcc7-omp-base	51m 8s
pytest-ubuntu-py39-gcc7-omp-adjoint	37m 46s
pytest-ubuntu-py310-gcc10-noomp-base	53m 24s
pytest-ubuntu-py310-gcc10-noomp-adjoint	37m 28s
pytest-ubuntu-py312-gcc13-omp-base	1h 5m 53s
pytest-ubuntu-py312-gcc13-omp-adjoint	48m 5s
pytest-ubuntu-py39-gcc9-omp-base	50m 40s
pytest-ubuntu-py39-gcc9-omp-adjoint	37m 28s
pytest-osx-py312-clang-omp-base	45m 8s
pytest-docker-py39-gcc-omp-base	45m 16s
pytest-docker-py39-gcc-omp-adjoint	34m 27s
pytest-docker-py39-icx-omp-base	37m 53s
pytest-docker-py39-icx-omp-adjoint	33m 34s
	13h 2m 26s

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