Add isInteractivePictureInPicture attribute to TaskInfo

To be used to persist iPiP request from ActivityOptions,
mainly for WM. go/interactive-pip

Bug: 399376001
Bug: 432179290
Flag: com.android.window.flags.enable_interactive_picture_in_picture
Test: N/A
Change-Id: Ib352d2d114711e838c1d568c546807da712c5221