FR/BUG: Creating a new note should replace the Beautitab

[krzemian]

Current behavior:

1. Have only the Beautitab open
2. Create a new note
3. It opens a separate tab (rather than replacing Beautitab)

The above is different from the way Obsidian works by default, which is to replace the empty tab. To me, Beautitab needs to be treated as an empty tab rather than a regular note tab in order for it to be useful.

There is a way to circumvent that by using the "Create a new note in the current tab" shortcut, but this creates other issues when working with regular notes