CP Chart - Reposition model helper when off window

This is already fixed when it is out to the right,
but still can happen to the left.

Fixes #3995

src/Charts/CriticalPowerWindow.cpp

@@ -1365,7 +1365,8 @@ CriticalPowerWindow::event(QEvent *event)
         }
 
         // if off the screen move on screen
-        if (helperWidget()->geometry().x() > geometry().width()) {
+        if (helperWidget()->geometry().x() > geometry().width() ||
+            helperWidget()->geometry().x() < geometry().x()) {
             helperWidget()->move(mainWidget()->geometry().width()-(275*dpiXFactor), 50*dpiYFactor);
         }
     }