patch 8.2.1135: Vim9: getting a dict member may not work

Problem:    Vim9: getting a dict member may not work.
Solution:   Clear the dict only after copying the item.

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1135,
 /**/
     1134,
 /**/