patch 8.2.3904: Vim9: skip expression type is not checked at compile time

Problem:    Vim9: skip expression type is not checked at compile time.
Solution:   Add argument type checks.
diff --git a/src/version.c b/src/version.c
index 7d5d6b5..809f60e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3904,
+/**/
     3903,
 /**/
     3902,