Revert "Remove add constant method" #2254

Job	Run time
should run ci	7s
cache-pixi-lock	2m 56s
Unit tests: ubuntu \| pixi run -e test-minimum tests	3m 55s
Unit tests: ubuntu \| pixi run -e test-py311 tests	4m 2s
Unit tests: windows \| pixi run -e test tests	7m 46s
Unit tests: ubuntu \| pixi run -e test-py313 tests	4m 11s
TypeChecking: pixi run typing	-1s
Unit tests: ubuntu \| pixi run -e test tests	2m 54s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	-1s
merge-test-artifacts	0s
	25m 49s

Provide feedback