Revert "Revert "[xdl] Don't warn about `npm ls` when the command is interrupted""
Revert "Revert "[xdl] Don't warn about `npm ls` when the command is interrupted""

This reverts commit 61f41fd9ec9e69f4e49c2aafaba86bd2ae136b58.

fbshipit-source-id: 8f3a89a

exponentjs/xdl,exponentjs/xdl,exponentjs/xdl