Qt: fix richtext_item_delegate palette

We have to use the styled palette instead of the default palette in order to fix the style of lists as seen the pkg installer.

rpcs3/rpcs3qt/log_frame.cpp

@@ -135,7 +135,7 @@ log_frame::log_frame(std::shared_ptr<gui_settings> guiSettings, QWidget *parent)
 	}
 	else
 	{
-		m_tty_input->setPlaceholderText(tr("All User Channels"));
+		m_tty_input->setPlaceholderText(tr("All user channels"));
 	}
 
 	QVBoxLayout* tty_layout = new QVBoxLayout();

rpcs3/rpcs3qt/richtext_item_delegate.h

@@ -51,16 +51,14 @@ public:
 		painter->setClipRect(text_rect.translated(-text_rect.topLeft()));
 
 		// Create a context for our painter
-		const QAbstractTextDocumentLayout::PaintContext context;
+		QAbstractTextDocumentLayout::PaintContext context;
 
-		// We can change the text color based on state (Unused because it didn't look good)
-		//context.palette.setColor(QPalette::Text, option.palette.color(QPalette::Active, (option.state & QStyle::State_Selected) ? QPalette::HighlightedText : QPalette::Text));
+		// Apply the styled palette
+		context.palette = opt.palette;
 
 		// Draw the text
 		m_document->documentLayout()->draw(painter, context);
 
 		painter->restore();
-
-		//QStyledItemDelegate::paint(painter, opt, index); // Unused
 	}
 };