patch 8.2.2602: Vim9: continue doesn't work if :while is very first command

Problem:    Vim9: continue doesn't work if :while is very first command.
            (Yegappan Lakshmanan)
Solution:   Add one to the continue instruction index.

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2602,
 /**/
     2601,
 /**/