fix: Adapting to QProcess Usage in Qt 6

Log: The abnormal execution of QProcess resulted in empty fuser output, causing port availability verification to fail, which ultimately led to connection failures with the correct debugging backend and freeze ide

Bug: https://pms.uniontech.com/bug-view-315851.html

Author: LiHua000

src/tools/debugadapter/debugger/python/pythondebugger.cpp

@@ -115,7 +115,7 @@ void PythonDebugger::initialize(const QString &pythonExecute,
     auto checkPortFree = [](int port) {
         QProcess process;
         QString cmd = QString("fuser %1/tcp").arg(port);
-        process.start(cmd);
+        process.start("bash", {"-c", cmd});
         process.waitForFinished();
         QString ret = process.readAll();
         if (ret.isEmpty())