Improve sync API performance

PR #18394.

src/base/bittorrent/session.h

@@ -433,6 +433,7 @@ namespace BitTorrent
         void allTorrentsFinished();
         void categoryAdded(const QString &categoryName);
         void categoryRemoved(const QString &categoryName);
+        void categoryOptionsChanged(const QString &categoryName);
         void downloadFromUrlFailed(const QString &url, const QString &reason);
         void downloadFromUrlFinished(const QString &url);
         void fullDiskError(Torrent *torrent, const QString &msg);

src/base/bittorrent/sessionimpl.cpp

@@ -865,6 +865,7 @@ bool SessionImpl::editCategory(const QString &name, const CategoryOptions &optio
         }
     }
 
+    emit categoryOptionsChanged(name);
     return true;
 }