Do not match access keys on input elements that are not effectively enabled. (#13185)

src/Avalonia.Base/Input/AccessKeyHandler.cs

@@ -183,7 +183,8 @@ namespace Avalonia.Input
                 var text = e.Key.ToString();
                 var matches = _registered
                     .Where(x => string.Equals(x.AccessKey, text, StringComparison.OrdinalIgnoreCase)
-                        && x.Element.IsEffectivelyVisible)
+                        && x.Element.IsEffectivelyVisible
+                        && x.Element.IsEffectivelyEnabled)
                     .Select(x => x.Element);
 
                 // If the menu is open, only match controls in the menu's visual tree.

tests/Avalonia.Base.UnitTests/Input/AccessKeyHandlerTests.cs

@@ -165,6 +165,30 @@ namespace Avalonia.Base.UnitTests.Input
             Assert.Equal(1, raised);
         }
 
+        [Fact]
+        public void Should_Not_Raise_AccessKeyPressed_For_Registered_Access_Key_When_Not_Effectively_Enabled()
+        {
+            var button = new Button();
+            var root = new TestRoot(button) { IsEnabled = false };
+            var target = new AccessKeyHandler();
+            var raised = 0;
+
+            target.SetOwner(root);
+            target.Register('A', button);
+            button.AddHandler(AccessKeyHandler.AccessKeyPressedEvent, (s, e) => ++raised);
+
+            KeyDown(root, Key.LeftAlt);
+            Assert.Equal(0, raised);
+
+            KeyDown(root, Key.A, KeyModifiers.Alt);
+            Assert.Equal(0, raised);
+
+            KeyUp(root, Key.A, KeyModifiers.Alt);
+            KeyUp(root, Key.LeftAlt);
+
+            Assert.Equal(0, raised);
+        }
+
         [Fact]
         public void Should_Open_MainMenu_On_Alt_KeyUp()
         {