patch 8.2.2961: keys typed during a :normal command are discarded

Problem:    Keys typed during a :normal command are discarded.
Solution:   Concatenate saved typeahead and typed kesy. (closes #8340)
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 4aaccb5..25ec9c3 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -8249,7 +8249,7 @@
 restore_current_state(save_state_T *sst)
 {
     // Restore the previous typeahead.
-    restore_typeahead(&sst->tabuf);
+    restore_typeahead(&sst->tabuf, FALSE);
 
     msg_scroll = sst->save_msg_scroll;
     restart_edit = sst->save_restart_edit;