patch 8.2.3415: Vim9: not all function argument types are properly checked

Problem:    Vim9: Not all function argument types are properly checked.
Solution:   Add and improve argument type checks. (Yegappan Lakshmanan,
            closes #8839)

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3415,
 /**/
     3414,
 /**/