The fractional scaling is not applied for present surfaces on swaymsg

[kchibisov]

When issuing the swaymsg output "*" scale 1.5, the scaling for the present surfaces won't be applied unless I move it between monitors without doing any resizes. If I create a new window, it'll get the right scaling.

sway hash used for testing: 633d409
wlroots hash used for testing: 782b5e65655d3b8d1ecdd31c57dea342a6a0c0e0

[emersion]

#7465