Fixed Negative Button for converters inconsistent with visibility (#1410)

When the unit converter's category is changed, the corresponding property setter for the CurrentCategory variable mistakenly calls OnPropertyChanged("CurrentCategory") instead of RaisePropertyChanged("CurrentCategory"). This results in a failure to notify XAML that the CurrentCategory variable has changed, resulting in the corresponding UI to not be updated accordingly.

src/CalcViewModel/UnitConverterViewModel.h

@@ -187,7 +187,7 @@ namespace CalculatorApp
                         auto currentCategory = value->GetModelCategory();
                         IsCurrencyCurrentCategory = currentCategory.id == CalculatorApp::Common::NavCategory::Serialize(CalculatorApp::Common::ViewMode::Currency);
                     }
-                    OnPropertyChanged("CurrentCategory");
+                    RaisePropertyChanged("CurrentCategory");
                 }
             }