Do not add the noDisplay activity to source task

Force adding the noDisplay activity to the source task may not
comply with the task affinity policy. It is also possible that the
activities in the source task being removed due to the
FLAG_ACTIVITY_CLEAR_TASK flag.

Bug: 359130793
Test: wm presubmit
Flag: EXEMPT bugfix
Change-Id: I7e3da64f69c63b625596f332ca8b3136178c26ab