patch 8.2.4183: cannot use an import in 'formatexpr'

Problem:    Cannot use an import in 'formatexpr'.
Solution:   Set the script context when evaluating 'formatexpr'.
diff --git a/src/version.c b/src/version.c
index fcf40bd..bdf7a3a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4183,
+/**/
     4182,
 /**/
     4181,