Pcbnew cross-probing: highlight in GAL canvas doesn't work properly when selecting a symbol in Eeschema on some installs.

This fix forces a refresh.

Fixes: lp:1749799
https://bugs.launchpad.net/kicad/+bug/1749799

pcbnew/tools/pcb_editor_control.cpp

@@ -864,6 +864,10 @@ int PCB_EDITOR_CONTROL::CrossProbeSchToPcb( const TOOL_EVENT& aEvent )
         // Otherwise simply select the corresponding item
         {
             m_toolMgr->RunAction( PCB_ACTIONS::selectItem, true, item );
+            // Ensure the display is refreshed, because in some installs
+            // the refresh is done only when the gal canvas has the focus, and
+            // that is not the case when crossprobing from Eeschema:
+            m_frame->GetGalCanvas()->Refresh();
         }
     }