Bug: Error when folder is selected in FzfxBuffers

[savchenko]

Steps to reproduce

1. Have NetRW open so that one of the buffers is a folder
2. Call :FzfxBuffers and select the folder
3. Observe the error below

E784: Cannot close last tab page                                                                                                                                                                                     
Error executing luv callback:                                                                                                                                                                                        
...al/share/nvim/lazy/fzfx.nvim/lua/fzfx/commons/fileio.lua:251: failed to read file "toolbox": "EISDIR: illegal operation on a directory"                                                                           
stack traceback:                                                                                                                                                                                                     
        [C]: in function 'error'                                                                                                                                                                                     
        ...al/share/nvim/lazy/fzfx.nvim/lua/fzfx/commons/fileio.lua:251: in function <...al/share/nvim/lazy/fzfx.nvim/lua/fzfx/commons/fileio.lua:249>

Potentially related to #734

[linrongbin16]

hi @savchenko , I merged PR #739 to fix this issue. i.e. failed to read a directory.

But since I actually don't have a local environment to test it with netrw, so I'm not 100% confident it's been fixed. Please pull and try.

[savchenko]

It actually doesn't list NetRW folders at all now. Perfect!

[linrongbin16]

It actually doesn't list NetRW folders at all now. Perfect!

I don't think I changed the providers, i.e. the NetRW list should remain the same results 🤣 .

Anyway, let's keep it now.