Treemacs loses state and persists it

[knkski]

It loses most state, except for the current project, and then persists the bad state.

Steps to reproduce:

1. Configure Treemacs to your liking. I have several different projects that I've added
2. Press SPC h r r to run doom/reload
3. Treemacs has disappeared, that's fine I'll open it back up
4. Open it back up to see that everything was lost, except for the currently-open project
5. Quit Emacs to see if it was just weird state
6. Reopen Emacs and find that it did lose everything
7. Check persist file to confirm

I was also just able to reproduce by having multiple windows open and switching between them:

1. Have Treemacs open and one window selected
2. Close Treemacs (+treemacs/toggle)
3. Move to other window
4. Open Treemacs back up (+treemacs/toggle)
5. See that the single project shown is for the new window and not the old one
6. If I quit Emacs, that state will be persisted

Here's a simple example config of what I usually work with:

* Perspective main
** foo
 - path :: ~/foo
** bar
 - path :: ~/bar
** baz
 - path :: ~/baz

Here's a common result of what I'm left with, e.g. after editing one of the Doom config files and running doom/reload

* Perspective main
** doom
 - path :: ~/.config/doom

And this is what I was getting when switching between windows (this or the plain doom one above):

* Perspective main
** foo
 - path :: ~/foo

This is with Treemacs 3.2 + Doom + Emacs 30.2