Qt: Reenable WinPanel style for patches

Partial revert of 7eb2b07.

Looks much worse in Fusion/default style.

src/duckstation-qt/gamepatchsettingswidget.cpp

@@ -92,7 +92,6 @@ void GamePatchSettingsWidget::reloadList()
 
   if (!patches.empty())
   {
-    m_ui.scrollArea->setFrameStyle(QFrame::WinPanel | QFrame::Sunken);
     layout->setContentsMargins(0, 0, 0, 0);
 
     bool first = true;
@@ -117,8 +116,6 @@ void GamePatchSettingsWidget::reloadList()
   }
   else
   {
-    m_ui.scrollArea->setFrameStyle(QFrame::NoFrame);
-
     QLabel* label = new QLabel(tr("No patches are available for this game."), container);
     QFont font(label->font());
     font.setPointSizeF(font.pointSizeF() + 2.0f);

src/duckstation-qt/gamepatchsettingswidget.ui

@@ -25,6 +25,9 @@
    </property>
    <item>
     <widget class="QScrollArea" name="scrollArea">
+     <property name="frameShape">
+      <enum>QFrame::Shape::WinPanel</enum>
+     </property>
      <property name="horizontalScrollBarPolicy">
       <enum>Qt::ScrollBarPolicy::ScrollBarAlwaysOff</enum>
      </property>