LibWeb: Do not layout grid items during grid container intrinsic sizing

There is not need to run layout inside grid items for intrinsic sizing
of grid container.

Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp

@@ -1316,6 +1316,14 @@ void GridFormattingContext::place_grid_items(AvailableSpace const& available_spa
     }
 }
 
+void GridFormattingContext::determine_grid_container_height()
+{
+    CSSPixels total_y = 0;
+    for (auto& grid_row : m_grid_rows_and_gaps)
+        total_y += grid_row.full_vertical_size();
+    m_automatic_content_height = total_y;
+}
+
 void GridFormattingContext::run(Box const& box, LayoutMode, AvailableSpace const& available_space)
 {
     place_grid_items(available_space);
@@ -1327,6 +1335,13 @@ void GridFormattingContext::run(Box const& box, LayoutMode, AvailableSpace const
     run_track_sizing(available_space, GridDimension::Column);
     run_track_sizing(available_space, GridDimension::Row);
 
+    determine_grid_container_height();
+
+    if (available_space.height.is_intrinsic_sizing_constraint() || available_space.width.is_intrinsic_sizing_constraint()) {
+        determine_intrinsic_size_of_grid_container(available_space);
+        return;
+    }
+
     auto layout_box = [&](int row_start, int row_end, int column_start, int column_end, Box const& child_box) -> void {
         if (column_start < 0 || row_start < 0)
             return;
@@ -1393,14 +1408,6 @@ void GridFormattingContext::run(Box const& box, LayoutMode, AvailableSpace const
             grid_item.gap_adjusted_column(box) + resolved_column_span,
             grid_item.box());
     }
-
-    if (available_space.height.is_intrinsic_sizing_constraint() || available_space.width.is_intrinsic_sizing_constraint())
-        determine_intrinsic_size_of_grid_container(available_space);
-
-    CSSPixels total_y = 0;
-    for (auto& grid_row : m_grid_rows_and_gaps)
-        total_y += grid_row.full_vertical_size();
-    m_automatic_content_height = total_y;
 }
 
 void GridFormattingContext::determine_intrinsic_size_of_grid_container(AvailableSpace const& available_space)

Userland/Libraries/LibWeb/Layout/GridFormattingContext.h

@@ -167,6 +167,7 @@ private:
     Vector<GridItem> m_grid_items;
     Vector<JS::NonnullGCPtr<Box const>> m_boxes_to_place;
 
+    void determine_grid_container_height();
     void determine_intrinsic_size_of_grid_container(AvailableSpace const& available_space);
 
     AvailableSize get_free_space(AvailableSpace const&, GridDimension const) const;