Update remaining size of ignored files to 0

Also fixes a bug where ignoring the last item within a folder wouldn't recalculate the folder's size

src/gui/torrentcontentmodelitem.cpp

@@ -76,7 +76,7 @@ qreal TorrentContentModelItem::progress() const
 qulonglong TorrentContentModelItem::remaining() const
 {
     Q_ASSERT(!isRootItem());
-    return m_remaining;
+    return (m_priority == BitTorrent::DownloadPriority::Ignored) ? 0 : m_remaining;
 }
 
 qreal TorrentContentModelItem::availability() const