dev/sg/check: do not exit in interactive mode if fix errors
Created by: bobheadxi
Fixes note from @burmudar in https://github.com/sourcegraph/sourcegraph/pull/37040#issuecomment-1153662706
Test plan
Unit test on the interactive runner
Created by: bobheadxi
Fixes note from @burmudar in https://github.com/sourcegraph/sourcegraph/pull/37040#issuecomment-1153662706
Unit test on the interactive runner