message: Fix HotKeyBox validation (win)
diff: @@ -99,7 +99,13 @@ namespace TogglDesktop.ViewModels
  private void UpdateKnownShortcuts(HotKey previousValue, HotKey newValue, string hotKeyDescription)
  {
  - if (!previousValue.IsNullOrNone()) _knownShortcuts.Remove(previousValue);
  + if (!previousValue.IsNullOrNone())
  + {
  + if (_knownShortcuts[previousValue] == hotKeyDescription)
  + {
  + _knownShortcuts.Remove(previousValue);
  + }
  + }
  if (!newValue.IsNullOrNone())
  {
  if (!_knownShortcuts.ContainsKey(newValue))
  