Folder tree can't display folder's name with \n correctly

[MondoGao]

Does this issue occur when all extensions are disabled?: ✅Yes

• Version: 1.56.2
• Commit: 054a929
• Date: 2021-05-12T17:44:30.902Z
• Electron: 12.0.4
• Chrome: 89.0.4389.114
• Node.js: 14.16.0
• V8: 8.9.255.24-electron.0
• OS: Darwin x64 20.3.0

Steps to Reproduce:

1. node -e "fs.mkdir('{\n folder', console.log)"
2. Folder name will be truncated to only "{" in vscode folder tree:
   
   rather than in ls
   

mkdir '{\n' or mkdir {\<new-line> won't produce the same result as node!

[isidorn]

This is a fair bug in the explorer. When displaying file names we should escape newlines.
For now assigning to backlog and we might tackle in the future