Fix dumping into disposals (#19736)

Content.Client/Disposal/Systems/DisposalUnitSystem.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using Content.Shared.Disposal;
 using Content.Shared.Disposal.Components;
 using Content.Shared.DragDrop;
@@ -53,6 +54,16 @@ public sealed class DisposalUnitSystem : SharedDisposalUnitSystem
         return HasComp<DisposalUnitComponent>(uid);
     }
 
+    public override bool ResolveDisposals(EntityUid uid, [NotNullWhen(true)] ref SharedDisposalUnitComponent? component)
+    {
+        if (component != null)
+            return true;
+
+        TryComp<DisposalUnitComponent>(uid, out var storage);
+        component = storage;
+        return component != null;
+    }
+
     public override void DoInsertDisposalUnit(EntityUid uid, EntityUid toInsert, EntityUid user, SharedDisposalUnitComponent? disposal = null)
     {
         return;

Content.Server/Disposal/Unit/EntitySystems/DisposalUnitSystem.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Content.Server.Administration.Logs;
 using Content.Server.Atmos.EntitySystems;
@@ -200,7 +201,7 @@ public sealed class DisposalUnitSystem : SharedDisposalUnitSystem
 
     public override void DoInsertDisposalUnit(EntityUid uid, EntityUid toInsert, EntityUid user, SharedDisposalUnitComponent? disposal = null)
     {
-        if (!Resolve(uid, ref disposal))
+        if (!ResolveDisposals(uid, ref disposal))
             return;
 
         if (!disposal.Container.Insert(toInsert))
@@ -737,6 +738,16 @@ public sealed class DisposalUnitSystem : SharedDisposalUnitSystem
         return HasComp<DisposalUnitComponent>(uid);
     }
 
+    public override bool ResolveDisposals(EntityUid uid, [NotNullWhen(true)] ref SharedDisposalUnitComponent? component)
+    {
+        if (component != null)
+            return true;
+
+        TryComp<DisposalUnitComponent>(uid, out var storage);
+        component = storage;
+        return component != null;
+    }
+
     public override bool CanInsert(EntityUid uid, SharedDisposalUnitComponent component, EntityUid entity)
     {
         if (!base.CanInsert(uid, component, entity) || component is not SharedDisposalUnitComponent serverComp)

Content.Shared/Disposal/SharedDisposalUnitSystem.cs

@@ -8,7 +8,6 @@ using Content.Shared.Item;
 using Content.Shared.Mobs.Components;
 using Content.Shared.Mobs.Systems;
 using Content.Shared.Throwing;
-using JetBrains.Annotations;
 using Robust.Shared.Audio;
 using Robust.Shared.Physics.Components;
 using Robust.Shared.Physics.Events;
@@ -37,6 +36,8 @@ public abstract class SharedDisposalUnitSystem : EntitySystem
 
     public abstract bool HasDisposals([NotNullWhen(true)] EntityUid? uid);
 
+    public abstract bool ResolveDisposals(EntityUid uid, [NotNullWhen(true)] ref SharedDisposalUnitComponent? component);
+
     /// <summary>
     /// Gets the current pressure state of a disposals unit.
     /// </summary>