Fixed plant layering issue

prefabs/farm/base_plant_2d.tscn

@@ -26,6 +26,8 @@ resource_local_to_scene = true
 radius = 300.0
 
 [node name="BasePlant" type="Node2D" node_paths=PackedStringArray("_seeds", "_smallPlants", "_bigPlants", "_readyPlants", "_harvestablePlant")]
+z_index = 1
+y_sort_enabled = true
 script = ExtResource("1_tikj4")
 _seeds = [NodePath("Seeds/TomatoSeed"), NodePath("Seeds/TomatoSeed2"), NodePath("Seeds/TomatoSeed3")]
 _smallPlants = [NodePath("SmallPlant/01"), NodePath("SmallPlant/02"), NodePath("SmallPlant/03"), NodePath("SmallPlant/04")]