Fix do-after flicker (#10020)

Content.Client/DoAfter/UI/DoAfterControl.cs

@@ -0,0 +1,45 @@
+using Content.Client.Resources;
+using Robust.Client.Graphics;
+using Robust.Client.ResourceManagement;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Map;
+using Robust.Shared.Timing;
+
+namespace Content.Client.DoAfter.UI;
+
+public sealed class DoAfterControl : PanelContainer
+{
+    public float Ratio
+    {
+        get => _bar.Ratio;
+        set => _bar.Ratio = value;
+    }
+
+    public bool Cancelled
+    {
+        get => _bar.Cancelled;
+        set => _bar.Cancelled = value;
+    }
+
+    private DoAfterBar _bar;
+
+    public DoAfterControl()
+    {
+        IoCManager.InjectDependencies(this);
+
+        var cache = IoCManager.Resolve<IResourceCache>();
+
+        AddChild(new TextureRect
+        {
+            Texture = cache.GetTexture("/Textures/Interface/Misc/progress_bar.rsi/icon.png"),
+            TextureScale = Vector2.One * DoAfterBar.DoAfterBarScale,
+            VerticalAlignment = VAlignment.Center,
+        });
+
+        _bar = new DoAfterBar();
+        AddChild(_bar);
+        VerticalAlignment = VAlignment.Bottom;
+        _bar.Measure(Vector2.Infinity);
+        Measure(Vector2.Infinity);
+    }
+}