Allow TaskFragment to move to bottom when clear top

Add TaskFragment op OP_TYPE_SET_MOVE_TO_BOTTOM_IF_CLEAR_WHEN_LAUNCH
If set to true, when a launching activity clears top, the TaskFragment
is moved bottom of the Task instead of being finished.

Bug: 317896352
Test: atest TaskTests
Change-Id: I4c7e11f82fd26adda20233f6dfd954beb896c72b