patch 8.2.2946: Vim9: substitute expression cannot be a List

Problem:    Vim9: substitute expression cannot be a List in a :def function.
Solution:   Use typval2string(). (closes #8330)
diff --git a/src/version.c b/src/version.c
index ec20c94..efb1b42 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2946,
+/**/
     2945,
 /**/
     2944,