Preserve sidebar scroll position when navigating between documents

- Add x-navigate:scroll directive to sidebar container to maintain scroll position
- Add x-navigate:scroll to all document links in sidebar (tree-item.blade.php)
- Add x-navigate:scroll to 'New Document' button
- When clicking a link in sidebar, the sidebar scroll position is now preserved during page navigation
- Fixes issue where sidebar would scroll to top after loading a document

src/resources/views/livewire/sidebar-tree.blade.php

@@ -18,6 +18,7 @@
     @auth
         <div class="mt-6 pt-6 border-t border-gray-200">
             <a
+                x-navigate:scroll
                 href="{{ route('documents.create') }}"
                 class="flex items-center justify-center px-4 py-2 text-sm font-medium text-white bg-indigo-600 rounded-md hover:bg-indigo-700"
             >