Fix recent editor textbox regressions

osu.Game.Tests/Visual/UserInterface/TestSceneFormControls.cs

@@ -53,7 +53,7 @@ public TestSceneFormControls()
                             Current = { Disabled = true },
                             TabbableContentContainer = this,
                         },
-                        new FormNumberBox
+                        new FormNumberBox(allowDecimals: true)
                         {
                             Caption = "Number",
                             HintText = "Insert your favourite number",

osu.Game/Graphics/UserInterfaceV2/FormNumberBox.cs

@@ -1,32 +1,30 @@
 // Copyright (c) ppy Pty Ltd <[email protected]>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System.Globalization;
 using osu.Framework.Input;
 
 namespace osu.Game.Graphics.UserInterfaceV2
 {
     public partial class FormNumberBox : FormTextBox
     {
-        public bool AllowDecimals { get; init; }
+        private readonly bool allowDecimals;
 
-        internal override InnerTextBox CreateTextBox() => new InnerNumberBox
+        public FormNumberBox(bool allowDecimals = false)
+        {
+            this.allowDecimals = allowDecimals;
+        }
+
+        internal override InnerTextBox CreateTextBox() => new InnerNumberBox(allowDecimals)
         {
-            AllowDecimals = AllowDecimals,
             SelectAllOnFocus = true,
         };
 
         internal partial class InnerNumberBox : InnerTextBox
         {
-            public bool AllowDecimals { get; init; }
-
-            public InnerNumberBox()
+            public InnerNumberBox(bool allowDecimals)
             {
-                InputProperties = new TextInputProperties(TextInputType.Number, false);
+                InputProperties = new TextInputProperties(allowDecimals ? TextInputType.Decimal : TextInputType.Number, false);
             }
-
-            protected override bool CanAddCharacter(char character)
-                => char.IsAsciiDigit(character) || (AllowDecimals && CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator.Contains(character));
         }
     }
 }

osu.Game/Graphics/UserInterfaceV2/FormSliderBar.cs

@@ -119,15 +119,14 @@ private void load(OsuColour colours, OsuGame? game)
                             Caption = Caption,
                             TooltipText = HintText,
                         },
-                        textBox = new FormNumberBox.InnerNumberBox
+                        textBox = new FormNumberBox.InnerNumberBox(allowDecimals: true)
                         {
                             Anchor = Anchor.BottomLeft,
                             Origin = Anchor.BottomLeft,
                             RelativeSizeAxes = Axes.X,
                             Width = 0.5f,
                             CommitOnFocusLost = true,
                             SelectAllOnFocus = true,
-                            AllowDecimals = true,
                             OnInputError = () =>
                             {
                                 flashLayer.Colour = ColourInfo.GradientVertical(colours.Red3.Opacity(0), colours.Red3);