iconview: Don't expand items to more than natural size
iconview: Don't expand items to more than natural size

This ensures that items stay left-aligned instead of slowly expanding into
empty space when widening the iconview. It's also what the iconview did
pre-refactoring.

Note that for cases where natural width != minimum width, the cells
might still expand and shrink back.

msteinert/gtk,jadahl/gtk,grubersjoe/adwaita,davidgumberg/gtk,Lyude/gtk-,msteinert/gtk,jessevdk/gtk,grubersjoe/adwaita,msteinert/gtk,jigpu/gtk,Distrotech/gtk2,Adamovskiy/gtk,Lyude/gtk-,grubersjoe/adwaita,jessevdk/gtk,jigpu/gtk,Sidnioulz/SandboxGtk,jadahl/gtk,ahodesuka/gtk,alexlarsson/gtk,alexlarsson/gtk,jessevdk/gtk,grubersjoe/adwaita,grubersjoe/adwaita,alexlarsson/gtk,jadahl/gtk,msteinert/gtk,ebassi/gtk,msteinert/gtk,chergert/gtk,bratsche/gtk-,ahodesuka/gtk,Adamovskiy/gtk,alexlarsson/gtk,ahodesuka/gtk,jigpu/gtk,davidgumberg/gtk,Adamovskiy/gtk,Lyude/gtk-,ahodesuka/gtk,alexlarsson/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,jadahl/gtk,Distrotech/gtk2,Lyude/gtk-,Adamovskiy/gtk,ebassi/gtk,alexlarsson/gtk,jigpu/gtk,bratsche/gtk-,davidt/gtk,grubersjoe/adwaita,alexlarsson/gtk,bratsche/gtk-,bratsche/gtk-,msteinert/gtk,jadahl/gtk,Sidnioulz/SandboxGtk,alexlarsson/gtk,ebassi/gtk,Distrotech/gtk2,jadahl/gtk,Lyude/gtk-,chergert/gtk,davidt/gtk,chergert/gtk,ahodesuka/gtk,jessevdk/gtk,Distrotech/gtk2,davidt/gtk,Adamovskiy/gtk,ahodesuka/gtk,davidgumberg/gtk,jigpu/gtk,davidgumberg/gtk,davidt/gtk,bratsche/gtk-,davidgumberg/gtk,Sidnioulz/SandboxGtk,Distrotech/gtk2,davidt/gtk,jigpu/gtk,jadahl/gtk,Adamovskiy/gtk,ahodesuka/gtk,chergert/gtk,davidt/gtk,ebassi/gtk,davidgumberg/gtk,grubersjoe/adwaita,bratsche/gtk-,jessevdk/gtk,ahodesuka/gtk,jigpu/gtk,jigpu/gtk,chergert/gtk,Lyude/gtk-,Distrotech/gtk2,Sidnioulz/SandboxGtk,davidgumberg/gtk,chergert/gtk,chergert/gtk,Lyude/gtk-,Sidnioulz/SandboxGtk,ebassi/gtk,chergert/gtk,jessevdk/gtk,jadahl/gtk,ebassi/gtk,Lyude/gtk-,davidgumberg/gtk,jessevdk/gtk,Adamovskiy/gtk,grubersjoe/adwaita