Revert "Merge remote-tracking branch 'upstream/master' into ed-06-11-2024-upstream"

This reverts commit 1579da881a, reversing
changes made to a9bdab0705.

Content.Client/UserInterface/Controls/RecordedSplitContainer.cs

@@ -0,0 +1,29 @@
+using System.Numerics;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.UserInterface.Controls;
+
+/// <summary>
+///     A split container that performs an action when the split resizing is finished.
+/// </summary>
+public sealed class RecordedSplitContainer : SplitContainer
+{
+    public double? DesiredSplitCenter;
+
+    protected override Vector2 ArrangeOverride(Vector2 finalSize)
+    {
+        if (ResizeMode == SplitResizeMode.RespectChildrenMinSize
+            && DesiredSplitCenter != null
+            && !finalSize.Equals(Vector2.Zero))
+        {
+            SplitFraction = (float) DesiredSplitCenter.Value;
+
+            if (!Size.Equals(Vector2.Zero))
+            {
+                DesiredSplitCenter = null;
+            }
+        }
+
+        return base.ArrangeOverride(finalSize);
+    }
+}