Fix crates having zero gravity all to themselves (#443)

Resources/Prototypes/Entities/buildings/storage/crate_base.yml

@@ -16,16 +16,16 @@
     state: crate
 
   - type: Clickable
-  - type: Physics
-    mass: 25
-    Anchored: false
-
   - type: Collidable
     shapes:
     - !type:PhysShapeAabb
       bounds: "-0.4, -0.4, 0.4, 0.4"
       layer: 16
       mask: 19
+    IsScrapingFloor: true
+  - type: Physics
+    mass: 25
+    Anchored: false
       
   - type: EntityStorage
     Capacity: 60