Log an App Op when a package is requested to be deleted by a third party. (REQUEST_DELETE_PACKAGES)

Bug: 63907873
Test: manually with PackageInstaller.uninstall() and ACTION_UNINSTALL_PACKAGE (both with startActivity() and startActivityForResult()).
Test: Ran GTS tests: GtsPackageInstallSessionTestCases, GtsExternalSourcesTestCases, GtsExternalSourcesNegativeTestCases
Change-Id: I545a88eb50433a7d5ee96e71dfa853e93fb9372d