Revert^4 "Removing all restored backups except one so we don't have old backups"

To prevent the error I introduce the method restorePreviousState().

This reverts commit 12340905.

Reason for revert: Fixing presubmit breaks

Bug: 325285743
Flag:  ACONFIG narrow_grid_restore disabled
Test: BackupAndRestoreDBSelectionTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:ad46eb75f4c239321b1e8f03062dd7599cdc9495)
Merged-In: I63666c29eb91dada4243af019ab0538c40bc0f78
Change-Id: I63666c29eb91dada4243af019ab0538c40bc0f78