QtCharts support and a couple more fixes for log forwarding

• fix: sessionId is not empty even though there are no running projects
• fix: logs are not forwarded to DS before the error popup is closed
• add: qtcharts support (QDS-14435)

src/backend/importdummy.qml

@@ -31,6 +31,8 @@ import QtQuick.Timeline.BlendTrees
 import QtQuickUltralite.Extras
 import QtQuickUltralite.Layers
 
+import QtCharts
+
 import FlowView
 import Qt.labs.folderlistmodel