`Store::getFSAccessor`: Do not include the store dir #1758

Job	Run time
eval	51s
Check Docker secrets present for installer tests	1s
vm_tests	24m 9s
tests on ubuntu	2m 23s
tests on macos	3m 6s
installer test ${{ matrix.scenario }}	0s
flake_regressions	15m 44s
docker_push_image	0s
	46m 14s

Provide feedback