EntitySystemMessage Removal & InteractionSystem directed events (#3572)

* Removed obsolete EntitySystemMessage, now everything uses the base EntityEventArgs or the derived HandledEntityEventArgs.
Setup InteractionSystem to use new directed events.

* Update Submodule.

Content.Shared/Interfaces/GameObjects/Components/Interaction/IDropped.cs

@@ -1,4 +1,4 @@
-#nullable enable
+#nullable enable
 using System;
 using JetBrains.Annotations;
 using Robust.Shared.Analyzers;
@@ -32,13 +32,8 @@ namespace Content.Shared.Interfaces.GameObjects.Components
     ///     Raised when an entity is dropped
     /// </summary>
     [PublicAPI]
-    public class DroppedMessage : EntitySystemMessage
+    public class DroppedMessage : HandledEntityEventArgs
     {
-        /// <summary>
-        ///     If this message has already been "handled" by a previous system.
-        /// </summary>
-        public bool Handled { get; set; }
-
         /// <summary>
         ///     Entity that dropped the item.
         /// </summary>