[Publish] Move navigation, graph and search to same sidebar when outline is not used

Use case or problem

In Obsidian Publish, navigation is always in the left sidebar and graph in the right sidebar, while both could fit in one sidebar.
This reduces significantly the available space for content when using sliding panes layout.

Proposed solution

Either:

  • Move the graph to the left sidebar (preferred, as it is also a navigation tool), or
  • Propose an option to display navigation, graph, search and outline in any of the sidebars