Fix pushing (#3574)

Forgot I had commandeered that property

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Shared/GameObjects/Components/Movement/IMobMoverComponent.cs

@@ -6,6 +6,10 @@ namespace Content.Shared.GameObjects.Components.Movement
 {
     public interface IMobMoverComponent : IComponent
     {
+        const float GrabRangeDefault = 0.6f;
+        const float PushStrengthDefault = 600.0f;
+        const float WeightlessStrengthDefault = 0.4f;
+
         EntityCoordinates LastPosition { get; set; }
 
         public float StepSoundDistance { get; set; }
@@ -13,5 +17,7 @@ namespace Content.Shared.GameObjects.Components.Movement
         float GrabRange { get; set; }
 
         float PushStrength { get; set; }
+
+        float WeightlessStrength { get; set; }
     }
 }