With the introduction of tiling drag, i3’s click behavior in window decorations
changed: before tiling drag, in a tabbed or stacked container, a window would be
focused/raised on mouse down. After tiling drag, on mouse up.
This commit sends XCB_ALLOW_REPLAY_POINTER before running the tiling drag code,
thereby restoring the focus/raise-on-mouse-down behavior without affecting the
tiling drag operation.
fixes https://github.com/i3/i3/issues/5169