Unhandled error when scan finds directory without read permissions

**Describe the bug**

It seems the scan process scans *all* files in `~/.local/shared` for some reason.

The scan process seems to hang when it finds a directory without read permissions and leads to errors in other plugins that depend on LSP and run into a timeout.

In my case this happened because Steam on Linux creates directories with root permissions somewhere in my `~/.local` directory:

```
$ l -d '/home/mike/.local/share/Steam/steamapps/compatdata/0/pfx/dosdevices/z:/root'
drwx------ 23 root root 4,0K Sep 4 09:22 /home/mike/.local/share/Steam/steamapps/compatdata/0/pfx/dosdevices/z:/root
```

**To Reproduce**
Steps to reproduce the behavior:
1. Create a directory with root perms:
`sudo mkdir ~/.local/shared/x`
`sudo chmod 700 ~/.local/shared/x`
3. Start editing a .vim file that uses LSP

I can maybe provide a minimal `vimrc.vim` but it also requires to create a read-only directory somewhere in your home.

**Expected behavior**

The server should skip directories without read permissions.

Maybe an alternative is to restrict which directories are scanned.

**Desktop**
- OS: Linux Mint 21.2
- Neovim: 0.9.4
- Relevant plugins: nvim-lspconfig, Mason

Log:

```
[START][2023-11-25 11:02:35] LSP logging initiated
[ERROR][2023-11-25 11:02:35] .../vim/lsp/rpc.lua:734 "rpc" "/tmp/plugged/mason/bin/vim-language-server" "stderr" "node:events:491\n throw er; // Unhandled 'error' event\n ^\n\nError: EACCES: permission denied, scandir '/home/mike/.local/share/Steam/steamapps/compatdata/0/pfx/dosdevices/z:/root'\nEmitted 'error' event at:\n at AsyncReader._handleError (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/scan.js:22829:23)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/scan.js:22808:22\n at worked (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/scan.js:23378:14)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/scan.js:22815:24\n at callFailureCallback (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/scan.js:22974:5)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/scan.js:22905:20\n at node:fs:192:23\n at FSReqCallback.req.oncomplete (node:fs:1412:9) {\n errno: -13,\n code: 'EACCES',\n syscall: 'scandir',\n path: '/home/mike/.local/share/Steam/steamapps/compatdata/0/pfx/dosdevices/z:/root'\n}\n"
[WARN][2023-11-25 11:02:36] ...lsp/handlers.lua:537 "parser: Send error: Error [ERR_IPC_CHANNEL_CLOSED]: Channel closed\n at new NodeError (node:internal/errors:387:5)\n at ChildProcess.target.send (node:internal/child_process:749:16)\n at send (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27718:17)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27893:62\n at new Promise ()\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27891:62\n at step (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27674:23)\n at Object.next (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27655:53)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27649:71\n at new Promise ()"
[WARN][2023-11-25 11:02:36] ...lsp/handlers.lua:537 "parser: Send error: Error [ERR_IPC_CHANNEL_CLOSED]: Channel closed\n at new NodeError (node:internal/errors:387:5)\n at ChildProcess.target.send (node:internal/child_process:749:16)\n at send (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27718:17)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27893:62\n at new Promise ()\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27891:62\n at step (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27674:23)\n at Object.next (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27655:53)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27649:71\n at new Promise ()"
[WARN][2023-11-25 11:02:36] ...lsp/handlers.lua:537 "parser: Send error: Error [ERR_IPC_CHANNEL_CLOSED]: Channel closed\n at new NodeError (node:internal/errors:387:5)\n at ChildProcess.target.send (node:internal/child_process:749:16)\n at send (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27718:17)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27893:62\n at new Promise ()\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27891:62\n at step (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27674:23)\n at Object.next (/tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27655:53)\n at /tmp/plugged/mason/packages/vim-language-server/node_modules/vim-language-server/out/index.js:27649:71\n at new Promise ()"

```