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.
diff --git a/src/version.c b/src/version.c
index ac5425d..6c6211d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1176,
+/**/
     1175,
 /**/
     1174,