fix(container/grow_size): respect vertical / horizontal provided dimensions

examples/layouts/mixed.zig

@@ -71,7 +71,12 @@ pub fn main() !void {
                 .rectangle = .{ .fill = .yellow },
             }, .{}));
         } else {
-            try column.append(try App.Container.init(allocator, .{}, .{}));
+            try column.append(try App.Container.init(allocator, .{
+                .size = .{
+                    .dim = .{ .y = 5 },
+                    // .grow = .horizontal,
+                },
+            }, .{}));
         }
         try column.append(try App.Container.init(allocator, .{
             .rectangle = .{ .fill = .blue },

src/container.zig

@@ -690,10 +690,10 @@ pub fn Container(comptime Event: type) type {
                 .fixed => this.properties.size.dim,
                 .horizontal => .{
                     .x = @max(size.x, this.properties.size.dim.x),
-                    .y = size.y,
+                    .y = this.properties.size.dim.y,
                 },
                 .vertical => .{
-                    .x = size.x,
+                    .x = this.properties.size.dim.x,
                     .y = @max(size.y, this.properties.size.dim.y),
                 },
             };