Explicitly unset INSTALL_FROM_MANAGED_USER_OR_PROFILE flag

If the flag is not explicitly unset, an app could set this flag, leading
to unexpected behaviour if the install is not actually from a managed
user or profile.

Bug: 459461121
Test: atest PackageManagerShellCommandInstallTest#testSessionCreationWithManagedUserOrProfileFlag_notFromManagedProfile
Flag: EXEMPT BUGFIX
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:990428772d4718853382ec4c5feda2b7bd6f923f
Merged-In: I21bbbf628e97244d469eb23ce0558dbf560b7618
Change-Id: I21bbbf628e97244d469eb23ce0558dbf560b7618