Create data folder for archived installs.

This fixes the final known discrepancy between install->archive and
install-as-archived.

There is also a minor behavior change - previously we checked all users
on all installs. Now we only do this for the newly installed users.

Bug: 313720942
Test: presubmit
Change-Id: Id1c5a8d4322f0b251d326ba4276ab00048982311