HotkeyBox - Focus fixes

src/Artemis.UI.Shared/Controls/HotkeyBox.axaml.cs

@@ -79,7 +79,19 @@ public partial class HotkeyBox : UserControl
     private void InputServiceOnKeyboardKeyUp(object? sender, ArtemisKeyboardKeyEventArgs e)
     {
         if (e.Modifiers == KeyboardModifierKey.None)
-            Dispatcher.UIThread.Post(() => this.FindAncestorOfType<InputElement>()?.Focus());
+            Dispatcher.UIThread.Post(ClearFocus);
+    }
+
+    private void ClearFocus()
+    {
+        InputElement? element = this.FindAncestorOfType<InputElement>();
+        if (element == null)
+            return;
+        
+        bool wasFocusable = element.Focusable;
+        element.Focusable = true;
+        element.Focus();
+        element.Focusable = wasFocusable;
     }
 
     private void UpdateDisplayTextBox()
@@ -97,7 +109,7 @@ public partial class HotkeyBox : UserControl
     private void Button_OnClick(object? sender, RoutedEventArgs e)
     {
         Hotkey = null;
-        this.FindAncestorOfType<InputElement>()?.Focus();
+        ClearFocus();
 
         UpdateDisplayTextBox();
     }