Tracker: Don't sort poses in BPoseView::AddPosesCompleted().

Fixes #20018, #20050.

The sort was causing the scroll position on change directory
(go up/back) in navigation (single-window/browser) mode and
causing issues with pose list when type-ahead filtering.

Change-Id: Id07890462ac3ecd36f3db508671c77c943ee3e2c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10860
Reviewed-by: waddlesplash <[email protected]>

src/kits/tracker/PoseView.cpp

@@ -1734,9 +1734,6 @@ BPoseView::AddPosesCompleted()
 		float lastItemTop = (CurrentPoseList()->CountItems() - 1) * fListElemHeight;
 		if (bounds.top > lastItemTop)
 			_inherited::ScrollTo(bounds.left, std::max(lastItemTop, 0.0f));
-
-		SortPoses();
-		Invalidate();
 	}
 }