Add more UI helper methods for tests (#15463)

Content.IntegrationTests/Tests/Interaction/InteractionTest.cs

@@ -14,6 +14,7 @@ using Content.Shared.Hands.EntitySystems;
 using Content.Shared.Interaction;
 using NUnit.Framework;
 using Robust.Client.GameObjects;
+using Robust.Client.UserInterface;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
 using Robust.Shared.Prototypes;
@@ -91,6 +92,7 @@ public abstract partial class InteractionTest
 
     // CLIENT dependencies
     protected IEntityManager CEntMan = default!;
+    protected IUserInterfaceManager UiMan = default!;
     protected ConstructionSystem CConSys = default!;
     protected ExamineSystem ExamineSys = default!;
     protected InteractionTestSystem CTestSystem = default!;
@@ -98,7 +100,6 @@ public abstract partial class InteractionTest
     // player components
     protected HandsComponent Hands = default!;
     protected DoAfterComponent DoAfters = default!;
-    protected UserInterfaceSystem CUISystem = default!;
 
     public float TickPeriod => (float)Timing.TickPeriod.TotalSeconds;
 
@@ -125,10 +126,10 @@ public abstract partial class InteractionTest
 
         // client dependencies
         CEntMan = Client.ResolveDependency<IEntityManager>();
+        UiMan = Client.ResolveDependency<IUserInterfaceManager>();
         CTestSystem = CEntMan.System<InteractionTestSystem>();
         CConSys = CEntMan.System<ConstructionSystem>();
         ExamineSys = CEntMan.System<ExamineSystem>();
-        CUISystem = CEntMan.System<UserInterfaceSystem>();
 
         // Setup map.
         MapData = await PoolManager.CreateTestMap(PairTracker);