Fix Developer options appears after first boot, disappers on Settings Menu Reload

The Tiles are updated to disabled via PackageManager, which takes a few
seconds to kick in and hence the user sees the option appear and then
disappear. Making Developer Options disabled by default fixes the flash.

Note now the opposite happens, on eng builds where Developer Settings
are on by default they will not appear until the PackageManager update
has cleared.

Bug: 28121698
Change-Id: Ic7147e4430e2332d596ce37dbbce30e330dcf551