refactor: fix clang-tidy auto*, const&, and curly braces (#5083)

src/widgets/listview/GenericItemDelegate.cpp

@@ -22,7 +22,9 @@ void SwitcherItemDelegate::paint(QPainter *painter,
     if (item)
     {
         if (option.state & QStyle::State_Selected)
+        {
             painter->fillRect(option.rect, option.palette.highlight());
+        }
 
         item->paint(painter, option.rect);
     }

src/widgets/listview/GenericListView.cpp

@@ -25,7 +25,7 @@ GenericListView::GenericListView()
 
 void GenericListView::setModel(QAbstractItemModel *model)
 {
-    auto casted = dynamic_cast<GenericListModel *>(model);
+    auto *casted = dynamic_cast<GenericListModel *>(model);
     assert(casted);
     this->setModel(casted);
 }