patch 8.2.1846: Vim9: block variables are not found in compiled function

Problem:    Vim9: variables declared in a local block are not found in
            when a function is compiled.
Solution:   Look for script variables in sn_all_vars.

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1846,
 /**/
     1845,
 /**/