Add a intent creator token for the activity interceptors

When an activity launch is intercepted, Intent#prepareToLeaveProcess is
not called since the interception happens in the system_server. So if
any activity is calling a trampoline activity, the keys do not get
collected.

Since all the interceptors are present in the system_server, add the
creator token before launching the intercepted intent.

Bug: 399442502
Flag: EXEMPT (bug fix)
Test: m
Change-Id: I4434534b4bed8ef858603c95097d9855bf4d58a8