patch 8.2.1176: Vim9: not enough type checking in Vim9 script

Problem:    Vim9: not enough type checking in Vim9 script.
Solution:   Use same type checking as in a :def function.

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1176,
 /**/
     1175,
 /**/