patch 8.2.1589: term_start() options for size are overruled by 'termwinsize'

Problem:    Term_start() options for size are overruled by 'termwinsize'.
            (Sergey Vlasov)
Solution:   Set 'termwinsize' to the specified size.

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1589,
 /**/
     1588,
 /**/