Automatic buffer cleaning after session restore should be opt-in

[cseickel]

@nhat-vo @cseickel this breaks when using views in neovim with mkview and loadview. It seems that Neo-tree now thinks that it is restoring a session, so it closes the neotree sidebar that's open even though I'm not restoring an entire session. This needs to be fixed

Originally posted by @mehalter in #748 (comment)

[khaneliman]

This explains why neo-tree started becoming really obnoxious and closing my sidebar every time i switch to an existing buffer...

[nhat-vo]

@cseickel just want to note that in #771 I added a check to only remove the invalid neo-tree buffers. If I'm not wrong, that should fix the issues mentioned with mkview and loadview.

[cseickel]

@mehalter @khaneliman This feature is now disabled by default in version 2.52.

To enable the auto session cleanup, you will need to set this option:

  auto_clean_after_session_restore = true, -- Automatically clean up broken neo-tree buffers saved in sessions