Revert "fix(window): auto shrink gtk4 windows"

This reverts commit 173e35f.

Author: Aylur

lib/astal/gtk4/src/widget/window.vala

@@ -71,11 +71,6 @@ public class Astal.Window : Gtk.Window {
         // It won't show up later either when it size changes by adding children.
         height_request = 1;
         width_request = 1;
-
-        // When children get redrawn with a smaller size, the window won't
-        // shrink automatically so we set default_size to force it to.
-        default_height = 1;
-        default_width = 1;
         check("initialize layer shell");
     }