Fix map rendering (#8514)

* Fix negative grids

* Map renderer: skip, and warn on empty grids.

* Fix local transform

Content.MapRenderer/Painters/MapPainter.cs

@@ -111,6 +111,13 @@ namespace Content.MapRenderer.Painters
 
             foreach (var grid in grids)
             {
+                // Skip empty grids
+                if (grid.LocalAABB.IsEmpty())
+                {
+                    Console.WriteLine($"Warning: Grid {grid.Index} was empty. Skipping image rendering.");
+                    continue;;
+                }
+
                 var tileXSize = grid.TileSize * TilePainter.TileImageSize;
                 var tileYSize = grid.TileSize * TilePainter.TileImageSize;