patch 8.2.3162: Vim9: argument types are not checked at compile time

Problem:    Vim9: argument types are not checked at compile time.
Solution:   Add more type checks. (Yegappan Lakshmanan, closes #8560)
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index 63acebc..f8dbf8a 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -2614,7 +2614,7 @@
   set noim
   call assert_equal('are   some words', getline(1))
   call assert_false(&insertmode)
-  call assert_beeps("normal! \<C-\>\<C-A>", 'xt')
+  call assert_beeps("normal! \<C-\>\<C-A>")
 
   if has('cmdwin')
     " Using CTRL-\ CTRL-N in cmd window should close the window