Add density cutoff option to fix FDBM for all-electron densities. #844

Job	Run time
Test docker image on ubuntu-latest	2m 25s
test-package (3.8)	5m 55s
test-package (3.9)	5m 25s
test-package (3.10)	5m 22s
test-package (3.11)	5m 27s
test-package (3.12)	5m 47s
	30m 21s

Provide feedback