patch 8.2.3890: Vim9: type check for using v: variables is basic

Problem:    Vim9: type check for using v: variables is basic.
Solution:   Specify a more precise type.

src/version.c

@@ -749,6 +749,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3890,
 /**/
     3889,
 /**/