gridlayout: Use linear animation
gridlayout: Use linear animation

We should be "light" & the QEasingCurve::Linear should be the less resources expensive one.

pmattern/liblxqt,rbazaud/liblxqt,rbazaud/liblxqt,stefonarch/liblxqt,lxde/liblxqt,lxde/liblxqt,pmattern/liblxqt,ThomasVie/liblxqt,stefonarch/liblxqt,ThomasVie/liblxqt