ui/treemacs: disable treemacs-follow-mode

Can be disruptive if you've got many windows with buffers across
different projects. Also, SPC o P is available to "jump to current file"
in the treemacs window.

modules/ui/treemacs/config.el

@@ -28,6 +28,7 @@ There are 2 possible values:
   (defvar treemacs-collapse-dirs
     (if (executable-find "python3") 3 0))
 
+  (treemacs-follow-mode -1)
   (treemacs-filewatch-mode t)
   (when (memq +treemacs-use-git-mode '(simple extended))
     (treemacs-git-mode +treemacs-use-git-mode)))