C#: Add compat overloads

modules/mono/glue/GodotSharp/GodotSharpEditor/Compat.cs

@@ -0,0 +1,18 @@
+// This file contains methods that existed in a previous version of Godot in ClassDB but were removed
+// or their method signature has changed so they are no longer generated by bindings_generator.
+// These methods are provided to avoid breaking binary compatibility.
+
+using System;
+using System.ComponentModel;
+
+namespace Godot;
+
+partial class EditorUndoRedoManager
+{
+    /// <inheritdoc cref="CreateAction(string, UndoRedo.MergeMode, GodotObject, bool)"/>
+    [EditorBrowsable(EditorBrowsableState.Never)]
+    public void CreateAction(string name, UndoRedo.MergeMode mergeMode, GodotObject customContext)
+    {
+        CreateAction(name, mergeMode, customContext, backwardUndoOps: false);
+    }
+}