Paper save button, back to ctrl+enter save. (#25870)

* Revert "Change keybindings for paper (#25853)"

This reverts commit 4b56996fcd.

* Add a save button to the paper editing UI instead.

Content.Client/Paper/UI/PaperBoundUserInterface.cs

@@ -1,6 +1,5 @@
 using JetBrains.Annotations;
 using Robust.Client.UserInterface.Controls;
-using Robust.Shared.Input;
 using Robust.Shared.Utility;
 using static Content.Shared.Paper.SharedPaperComponent;
 
@@ -22,15 +21,7 @@ public sealed class PaperBoundUserInterface : BoundUserInterface
 
         _window = new PaperWindow();
         _window.OnClose += Close;
-        _window.Input.OnKeyBindDown += args => // Solution while TextEdit don't have events
-        {
-            if (args.Function == EngineKeyFunctions.MultilineTextSubmit)
-            {
-                var text = Rope.Collapse(_window.Input.TextRope);
-                Input_OnTextEntered(text);
-                args.Handle();
-            }
-        };
+        _window.OnSaved += Input_OnTextEntered;
 
         if (EntMan.TryGetComponent<PaperVisualsComponent>(Owner, out var visuals))
         {