Set QT_ENABLE_HIGHDPI_SCALING to 0 on Qt 6 on Windows (#4767)

src/main.cpp

@@ -24,6 +24,11 @@ using namespace chatterino;
 
 int main(int argc, char **argv)
 {
+    // TODO: This is a temporary fix (see #4552).
+#if defined(Q_OS_WINDOWS) && QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    qputenv("QT_ENABLE_HIGHDPI_SCALING", "0");
+#endif
+
     QApplication a(argc, argv);
 
     QCoreApplication::setApplicationName("chatterino");