Prevent showing overlays when unarchiving

When unarchiving an app:
- Hide non-system overlays
- Disable the restore button when another window is being shown on top
  of Pia

Bug: 370958259
Test: atest CtsPackageUninstallTestCases:ArchiveTest
Flag: EXEMPT.Bug fix only
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:799842233276351680f47420d8754f381dcbf86f)
Merged-In: If750c0a613136f3ad3040c544bd70ab428fe5ef2
Change-Id: If750c0a613136f3ad3040c544bd70ab428fe5ef2