Fix 3000 errors

Content.Server/Act/IDisarmedAct.cs

@@ -29,12 +29,12 @@ namespace Content.Server.Act
         /// <summary>
         ///     The entity being disarmed.
         /// </summary>
-        public IEntity? Target { get; init; }
+        public EntityUid Target { get; init; }
 
         /// <summary>
         ///     The entity performing the disarm.
         /// </summary>
-        public IEntity? Source { get; init; }
+        public EntityUid Source { get; init; }
 
         /// <summary>
         ///     Probability for push/knockdown.

Content.Server/Act/ISuicideAct.cs

@@ -7,7 +7,7 @@ namespace Content.Server.Act
     [RequiresExplicitImplementation]
     public interface ISuicideAct
     {
-        public SuicideKind Suicide(IEntity victim, IChatManager chat);
+        public SuicideKind Suicide(EntityUid victim, IChatManager chat);
     }
 
     public enum SuicideKind