Do not write recycled icon to TaskDescription parcel

This change prevent the recycled icon from writting to parcel. Some app
may recycle their icon while launch a new activity. Parceling tests is
added for TaskDescription.

Bug: 145504793
Test: Manual test with the reproduce steps in the bug.
Test: atest ActivityManagerTest:testTaskDescriptionParceling
Change-Id: Ib3bbfe6379419a0763c4d9da00cbd6670e488e1c