patch 8.1.2330: vi' does not always work when 'selection' is exclusive

Problem:    vi' does not always work when 'selection' is exclusive.
Solution:   Adjust start position.

src/testdir/test_textobjects.vim

@@ -45,11 +45,18 @@ func Test_quote_selection_selection_exclusive()
   new
   call setline(1, "a 'bcde' f")
   set selection=exclusive
+
   exe "norm! fdvhi'y"
   call assert_equal('bcde', @")
+
   let @"='dummy'
   exe "norm! $gevi'y"
   call assert_equal('bcde', @")
+
+  let @"='dummy'
+  exe "norm! 0fbhvi'y"
+  call assert_equal('bcde', @")
+
   set selection&vim
   bw!
 endfunc