patch 8.2.3763: when editing the cmdline a callback may cause a scroll up

Problem:    When editing the command line a FocusLost callback may cause the
            screen to scroll up.
Solution:   Do not redraw at the last line but at the same place where the
            command line was before. (closes #9295)
diff --git a/src/beval.c b/src/beval.c
index 8e0efb5..8b7570b 100644
--- a/src/beval.c
+++ b/src/beval.c
@@ -308,7 +308,7 @@
 	    // The 'balloonexpr' evaluation may show something on the screen
 	    // that requires a screen update.
 	    if (must_redraw)
-		redraw_after_callback(FALSE);
+		redraw_after_callback(FALSE, FALSE);
 
 	    recursive = FALSE;
 	    return;