fix: mops with liquid can hit people again (#38486)

Content.Server/Fluids/EntitySystems/PuddleSystem.Spillable.cs

@@ -69,7 +69,8 @@ public sealed partial class PuddleSystem
         if (totalSplit == 0)
             return;
 
-        args.Handled = true;
+        // Optionally allow further melee handling occur
+        args.Handled = entity.Comp.PreventMelee;
 
         // First update the hit count so anything that is not reactive wont count towards the total!
         foreach (var hit in args.HitEntities)

Content.Shared/Fluids/Components/SpillableComponent.cs

@@ -28,4 +28,12 @@ public sealed partial class SpillableComponent : Component
     /// </summary>
     [DataField]
     public bool SpillWhenThrown = true;
+
+    /// <summary>
+    ///     If true, melee processing will stop if any reagent is transferred.
+    ///     Otherwise, melee processing keeps occuring allowing both reagent
+    ///     transfer and melee damage to happen.
+    /// </summary>
+    [DataField]
+    public bool PreventMelee = true;
 }

Resources/Prototypes/Entities/Objects/Specific/Janitorial/janitor.yml

@@ -26,6 +26,7 @@
   - type: Spillable
     solution: absorbed
     spillWhenThrown: false
+    preventMelee: false
   - type: DrainableSolution
     solution: absorbed
   - type: Wieldable
@@ -84,6 +85,7 @@
     - type: Spillable
       solution: absorbed
       spillWhenThrown: false
+      preventMelee: false
     - type: DrainableSolution
       solution: absorbed
     - type: Wieldable