HandsSystem Refactor (#38438)

* checkpoint

* pt 2

* pt... i forgot

* pt 4

* patch

* More test fixes

* optimization!!!

* the REAL hand system

* fix RetractableItemActionSystem.cs oversight

* the review

* test

* remove test usage of body prototype

* Update Content.IntegrationTests/Tests/Interaction/InteractionTest.cs

Co-authored-by: Tayrtahn <tayrtahn@gmail.com>

* hellcode

* hellcode 2

* Minor cleanup

* test

* Chasing the last of the bugs

* changes

---------

Co-authored-by: Tayrtahn <tayrtahn@gmail.com>

Content.Shared/Magic/SharedMagicSystem.cs

@@ -434,7 +434,7 @@ public abstract class SharedMagicSystem : EntitySystem
             return;
 
         EntityUid? wand = null;
-        foreach (var item in _hands.EnumerateHeld(ev.Performer, handsComp))
+        foreach (var item in _hands.EnumerateHeld((ev.Performer, handsComp)))
         {
             if (!_tag.HasTag(item, ev.WandTag))
                 continue;