patch 8.2.4147: E464 does not always include the offending command

Problem:    E464 does not always include the offending command.
Solution:   Add another error message with "%s". (closes #9564)
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index d8d77ce..5f5f60f 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -2614,7 +2614,7 @@
 
     if (errormsg != NULL && *errormsg != NUL && !did_emsg)
     {
-	if (sourcing)
+	if (sourcing || !KeyTyped)
 	{
 	    if (errormsg != (char *)IObuff)
 	    {