patch 9.0.1457: no regression test for what patch 9.0.1333 fixes

Problem:    No regression test for what patch 9.0.1333 fixes.
Solution:   Extend existing test to cover the fixed problem. (issue #11930)
diff --git a/src/testdir/test_mapping.vim b/src/testdir/test_mapping.vim
index d631274..b1dd444 100644
--- a/src/testdir/test_mapping.vim
+++ b/src/testdir/test_mapping.vim
@@ -1555,15 +1555,15 @@
   let lines =<< trim END
       vim9script
       export def Func()
-        normal! dd
+        normal! V
       enddef
   END
   call writefile(lines, 'Xmapcmd/script.vim')
   new
-  call setline(1, ['one', 'two', 'three', 'four'])
+  call setline(1, ['one', 'two', 'three', 'four', 'five'])
   nnoremap j j
   source Xmapcmd/plugin.vim
-  call feedkeys("d\<F3>j.", 'xt')
+  call feedkeys("d\<F3>j.j.", 'xt')
   call assert_equal(['two', 'four'], getline(1, '$'))
 
   ounmap <F3>
diff --git a/src/version.c b/src/version.c
index 35c1eea..ca4774d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1457,
+/**/
     1456,
 /**/
     1455,