Fix throwing knockback when weightless (#2369)

* Fix throwing an item not moving the player when weightless

* Remove unnecessary code from ThrownItemComponent

* Fix velocity not stopping when hitting a wall after slipping when weightless

* Fix CanMove check being reversed

Content.Server/GameObjects/Components/Projectiles/ThrownItemComponent.cs

@@ -120,12 +120,5 @@ namespace Content.Server.GameObjects.Components.Projectiles
 
             StopThrow();
         }
-
-        public override void Initialize()
-        {
-            base.Initialize();
-
-            Owner.EnsureComponent<PhysicsComponent>().EnsureController<ThrownController>();
-        }
     }
 }