Do not change the selection when re-sorting the view

If a range of items has been selected by Shift-clicking or by pressing
Shift+Arrow, then each of them is added individually to the selection
before the items are re-sorted.

Before this commit, the first and the last item in the range were
moved, and all items between them were selected, even though these were
not necessarily the items which had been selected before the
re-sorting.

BUG: 333457
REVIEW: 117603
FIXED-IN: 4.13.1