patch 8.2.4202: Vim9: cannot export function that exists globally

Problem:    Vim9: cannot export function that exists globally.
Solution:   When checking if a function already exists only check for
            script-local functions. (closes #9615)
diff --git a/src/version.c b/src/version.c
index 1ba9e1d..99a7555 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4202,
+/**/
     4201,
 /**/
     4200,