test/support/helpers/scenarios: Enable atom captures for current platform only (#1489)
test/support/helpers/scenarios: Enable atom captures for current platform only (#1489)

The new atom watcher doesn't generate/handle events the same way on
Windows and GNU/Linux, so better not mix captures & platforms.
cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop