Ensure correct installer name is shown in UpdateOwnership dialog

If an APK is being sideloaded, the update ownership dialog must show the
name of the app installing the APK, and not the Package Installer

Bug: 319319384
Test: Manual. Follow repro steps from the bug
Test: atest CtsPackageInstallTestCases:UpdateOwnershipEnforcementTest
Change-Id: I1bb040b946dc912e886aaf72a6e4efedaf214b71