patch 8.2.4709: after :redraw the statusline highlight might be used

Problem:    After :redraw the statusline highlight might be used.
Solution:   Clear the screen attribute after redrawing the screen.
            (closes #10108)
diff --git a/src/version.c b/src/version.c
index a7bfece..7eec582 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4709,
+/**/
     4708,
 /**/
     4707,