patch 8.2.4286: Vim9: strict type checking after copy() and deepcopy()

Problem:    Vim9: strict type checking after copy() and deepcopy().
Solution:   Allow type to change after making a copy. (closes #9644)

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4286,
 /**/
     4285,
 /**/