[Qt6] Fix QFont::Weight enum

src/titler/titledocument.cpp

@@ -463,7 +463,7 @@ int TitleDocument::loadFromXml(const QDomDocument &doc, QList<QGraphicsItem *> &
                         font.setBold(node.nodeValue().toInt() != 0);
                     } else {
                         // New: Font weight (QFont::)
-                        font.setWeight(txtProperties.namedItem(QStringLiteral("font-weight")).nodeValue().toInt());
+                        font.setWeight(QFont::Weight(txtProperties.namedItem(QStringLiteral("font-weight")).nodeValue().toInt()));
                     }
                     // font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
                     font.setItalic(txtProperties.namedItem(QStringLiteral("font-italic")).nodeValue().toInt() != 0);

src/titler/titlewidget.cpp

@@ -1078,7 +1078,7 @@ void TitleWidget::slotNewText(MyTextItem *tt)
     QFont font = font_family->currentFont();
     font.setPixelSize(font_size->value());
     // mbd: issue 551:
-    font.setWeight(font_weight_box->itemData(font_weight_box->currentIndex()).toInt());
+    font.setWeight(QFont::Weight(font_weight_box->itemData(font_weight_box->currentIndex()).toInt()));
     font.setItalic(buttonItalic->isChecked());
     font.setUnderline(buttonUnder->isChecked());
 
@@ -1777,7 +1777,7 @@ void TitleWidget::slotUpdateText()
     font.setPixelSize(font_size->value());
     font.setItalic(buttonItalic->isChecked());
     font.setUnderline(buttonUnder->isChecked());
-    font.setWeight(font_weight_box->itemData(font_weight_box->currentIndex()).toInt());
+    font.setWeight(QFont::Weight(font_weight_box->itemData(font_weight_box->currentIndex()).toInt()));
     if (letter_spacing->value() != 0) {
         font.setLetterSpacing(QFont::AbsoluteSpacing, letter_spacing->value());
     }