Revise the logic of computing user intervention (2/n)

In computeUserActionRequirement(), it now honors update ownership
enforcement. If the app being installed has the update owner, the
user intervention will be required once the update isn't performed
by the update owner. In this Cl, we also revise the PackageInstaler
app to reflect the result to users.

Bug: 244413073
Test: atest CtsPackageInstallTestCases:UpdateOwnershipEnforcementTest
Change-Id: Ie620013a4adf861956226d34637dbd3a0dd9a3ea