Move the package directory before deleting it.

This change avoids the race between installd and artd.

Bug: 261431149
Test: -
  1. Add a "sleep" before artd creating the files.
  2. Add a "sleep" before installd moving the dir and deleting the dir.
  3. Install an app.
  4. Run "pm compile" on the app.
  5. While "pm compile" is on "sleep", uninstall the app.
  6. See the compilation failed and the failure handled properly.
  7. See the uninstallation succeeded and the package dir no longer
     present.
Test: -
  1. Add a "sleep" between artd invoking dex2oat and moving the files.
  2. Do step 2-5 above.
  3. See the same results.
Ignore-AOSP-First: ART Services
Change-Id: I4583943aeeb03915f76a5d66f44eff7347f8db14