fix(设备发现): 添加检查UUID路径逻辑

添加检查UUID路径逻辑

Closes 146038 【多端协同】平板模式下，安卓设备向麒麟设备投屏后，投屏窗口不会自动弹出，需要再次点击多端协同应用可以弹出（复现概率:2/10）

kylinconnectivitymanager/connectivitymanager.cpp

@@ -7,6 +7,9 @@
 #include <unistd.h>
 #include <QFile>
 #include <QThread>
+#include <QDir>
+
+const QString DSOFTBUS_UUID_PATH = "/data/data";
 
 ConnectivityManager::ConnectivityManager() {}
 
@@ -92,6 +95,13 @@ void ConnectivityManager::startDiscServer(QString cmd)
 {
     qInfo() << "disc softbus init";
     m_discServer = new QProcess(this);
+    QDir dir;
+    if (dir.exists(DSOFTBUS_UUID_PATH)) {
+        qInfo() << "DSoftbus is useful";
+    } else {
+        dir.mkdir(DSOFTBUS_UUID_PATH);
+    }
+
     connect(m_discServer, &QProcess::started, this, [=]() {
         Q_EMIT sigInitDiscServer(true);
     });