Tracker: Fix another navigator issue.

The problem indicated by #8388 hid another issue with respect to
show/hiding the navigator on the fly, namely that it didn't correctly
respect the type of Tracker window, which would cause the navigator to
show up in cases where it shouldn't, such as query windows.

src/kits/tracker/ContainerWindow.cpp

@@ -3942,8 +3942,10 @@ BContainerWindow::ShowSelectionWindow()
 void
 BContainerWindow::ShowNavigator(bool show)
 {
-	if (PoseView()->IsDesktopWindow())
+	if (PoseView()->IsDesktopWindow() || !TargetModel()->IsDirectory()
+		|| fPoseView->IsFilePanel()) {
 		return;
+	}
 
 	if (show) {
 		if (Navigator() && !Navigator()->IsHidden())