Limit the scope of find torrents hotkey in MainWindow

To TransferListWidget because it will interfere with the SearchWidget's focus hotkey

src/gui/mainwindow.cpp

@@ -866,7 +866,7 @@ void MainWindow::createKeyboardShortcuts()
     connect(switchRSSShortcut, &QShortcut::activated, this, static_cast<Func>(&MainWindow::displayRSSTab));
     QShortcut *switchExecutionLogShortcut = new QShortcut(Qt::ALT + Qt::Key_4, this);
     connect(switchExecutionLogShortcut, &QShortcut::activated, this, &MainWindow::displayExecutionLogTab);
-    QShortcut *switchSearchFilterShortcut = new QShortcut(QKeySequence::Find, this);
+    QShortcut *switchSearchFilterShortcut = new QShortcut(QKeySequence::Find, m_transferListWidget);
     connect(switchSearchFilterShortcut, &QShortcut::activated, this, &MainWindow::focusSearchFilter);
 
     m_ui->actionDocumentation->setShortcut(QKeySequence::HelpContents);