Fixes task behavior on AIA launch

This change allows the instant app installer to launch on which ever
task it is being called from, resulting in the sucess intent launching
using the flags the original caller intended and avoiding breaking the
flow when the installer is required.

Bug: 62872137
Test: manual - prototype installer no longer results in double tasks
Change-Id: I9e84ec89bc4bcb3c890bda8332d4110ac231382d