Handle pre-commit install session in PackageInstaller (3/n)

Since developers now could request a pre-commit install session
without APK files, PackageInstaller would need to support this
new use case.

Bug: 242677131
Test: atest CtsPackageInstallTestCases
Change-Id: I5da9504b0626b7fb81acb664d51df6de8c866ea2
3 files changed