patch 8.2.3823: test for visual replace is in wrong function

Problem:    Test for visual replace is in wrong function.
Solution:   Move it to another function.

src/testdir/test_visual.vim

@@ -234,10 +234,6 @@ func Test_virtual_replace()
   call assert_equal("\txaaaa", getline(1))
   set softtabstop&
 
-  call setline(1, "xã̳x")
-  normal gg0lvrb
-  call assert_equal("xbx", getline(1))
-
   enew!
   set noai bs&vim
   if exists('save_t_kD')
@@ -669,6 +665,11 @@ func Test_characterwise_visual_mode()
   normal v$rx
   call assert_equal(['x'], getline(1, '$'))
 
+  " replace a character with composing characters
+  call setline(1, "xã̳x")
+  normal gg0lvrb
+  call assert_equal("xbx", getline(1))
+
   bwipe!
 endfunc
 

src/version.c

@@ -749,6 +749,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3823,
 /**/
     3822,
 /**/