[Solid Device Engine] Don't update free space info for inaccessible storage devices

This might trigger automounting of devices.

CCBUG: 355258

Differential Revision: https://phabricator.kde.org/D14532

dataengines/soliddevice/soliddeviceengine.cpp

@@ -543,7 +543,7 @@ bool SolidDeviceEngine::updateStorageSpace(const QString &udi)
     Solid::Device device = m_devicemap.value(udi);
 
     Solid::StorageAccess *storageaccess = device.as<Solid::StorageAccess>();
-    if (!storageaccess) {
+    if (!storageaccess || !storageaccess->isAccessible()) {
         return false;
     }