PDF single-page example: shift content right as the search drawer opens

This was done in 0b6a4d94

 for the
multipage example.

Change-Id: Ia5b51b9239521ab4d65e41aaebe52d178e75932d
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

examples/pdf/pdfviewer/viewer.qml

@@ -206,6 +206,7 @@ ApplicationWindow {
     PdfScrollablePageView {
         id: view
         anchors.fill: parent
+        anchors.leftMargin: searchDrawer.position * searchDrawer.width
         document: PdfDocument {
             id: document
             source: Qt.resolvedUrl(root.source)