Ctrl+Shift+Arrow searched from the selection's moving corner, so after
Ctrl+Shift+Right from A2 the next Ctrl+Shift+Down searched the far column
and ran to the last row. As in Excel, it now searches the active cell's
column (Up/Down) or row (Left/Right) from the edge being moved, and moves
only that edge. A diagonal move from command params keeps the old jump.
Co-Authored-By: Olivier <5681030+tutis@users.noreply.github.com>
