build(vim-patch): helptoc is 100% n/a

Use "gO" mapping instead.
vim9script is N/A.

Detect 'runtime/doc/helphelp.txt' N/A patches for helptoc.

scripts/vim_na_hunks_vim.txt

@@ -82,9 +82,11 @@
 \*:scriptversion\*
 \*:shell\*
 \*:smile\*
+\*HelpToc-mappings\*
 \*SafeStateAgain\*
 \*SigUSR1\*
 \*emacs[_-]tags\*
+\*help-toc-install\*
 \*patches-\(after-\)\?[0-9].*\*
 \*test_gui_[a-zA-Z0-9_]\+()\*
 \*v:none\*

scripts/vim_na_regexp.txt

@@ -96,6 +96,7 @@ _example\.vim$
 /tags$
 README_[a-z]\+\.txt$
 [_.]cp125[0-1]
+helptoc
 netbeans
 textprop
 vimtutor