Everywhere: Use east const in more places

These changes are compatible with clang-format 16 and will be mandatory
when we eventually bump clang-format version. So, since there are no
real downsides, let's commit them now.

Userland/DevTools/HackStudio/FindInFilesWidget.cpp

@@ -128,7 +128,7 @@ FindInFilesWidget::FindInFilesWidget()
     m_result_view = add<GUI::TableView>();
 
     m_result_view->on_activation = [](auto& index) {
-        auto& match = *(const Match*)index.internal_data();
+        auto& match = *(Match const*)index.internal_data();
         open_file(match.filename);
         current_editor().set_selection(match.range);
         current_editor().set_focus(true);