Nested index pages not showing in navigation

[caendesilva]

Issue description

When having an index page in a subdirectory, it does not show up in navigation.

Steps to reproduce:

1. Run the following commands:

mkdir _pages/test
echo '@dd($page->navigation)' >> _pages/test/index.blade.php
php hyde build

2. Visit _site/test/index.html
3. Look at the dumped data which looks as follows:

^ Hyde\Framework\Features\Navigation\NavigationData {#406 ▼
  +label: "Test"
  +priority: 999
  +hidden: true
  +group: null
}

Expected behavior:

The page should show up in navigation and $hidden should be false.

Actual behavior:

The page does not show up in navigation and $hidden is true.

Cause of the issue:

Unknown.

Possible solution:

Unknown.

[caendesilva]

I think this is due to the hyde.navigation.subdirectories setting which defaults to hidden. We probably want a case similar to HydePageDataFactory::findTitleFromParentIdentifier so that when using the "hidden" setting, we use consider foo/index to be the same as foo and to use foo as the basis for the navigation title (which is the current label as it already is based on the parent title)