[PackageInstaller] fix an inverted boolean check The boolean check was inverted during the porting from V1 to V2. BUG: 480976221 Test: atest com.android.security.bug_480976221.HostsideTest FLAG: EXEMPT BUGFIX (cherry picked from commit 9dbc12bb1ebbab44ae1a2df571976b70fb2ead2e) Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:74406700259b7cbc6c96faaf24093341aba3340c Merged-In: I6c336109c5422170d993adba901d5a025217baa1 Change-Id: I6c336109c5422170d993adba901d5a025217baa1