patch 8.2.2254: Vim9: bool option type is number

Problem:    Vim9: bool option type is number.
Solution:   Have get_option_value() return a different value for bool and
            number options. (closes #7583)

src/testdir/test_vim9_cmd.vim

@@ -590,7 +590,7 @@ def Test_command_modifier_other()
   unlet g:readFile
 
   noswapfile edit XnoSwap
-  assert_equal(0, &l:swapfile)
+  assert_equal(false, &l:swapfile)
   bwipe!
 
   var caught = false