mod(container): provide minSize function for Element implementation to refer for nested structures

src/element.zig

@@ -303,7 +303,7 @@ pub fn Scrollable(Model: type, Event: type) type {
             const last_max_anchor_y = this.container_size.y -| this.size.y;
 
             // NOTE `container_size` denotes the `size` required for the container contents
-            var container_size = this.container.element.minSize(model, size);
+            var container_size = this.container.minSize(model, size);
             if (this.configuration.scrollbar) {
                 this.configuration.y_axis = this.container.properties.size.dim.x > size.x or container_size.x > size.x;
                 this.configuration.x_axis = this.container.properties.size.dim.y > size.y or container_size.y > size.y;