vscode: the current version can't auto guess the right encoding

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: 1.68.1 (user setup)
• OS Version: Windows_NT x64 10.0.19044

Issue Type: Bug

Steps to Reproduce:

When I open a file with gbk encoding, the current version vscode can’t open it with right encoding, and the old version works well. I have both turn files.autoGuessEncoding to true.

I have noticed that the current version have new function “file.Encoding” in Files setting. The default character set encoding to use when reading and writing files. When i use the current version vscode, it has a strange phenomenon, When i turn a gbk file, it will do one more refresh，before refresh, it guess the right encoding, after refresh, it goes wrong， It seem like use the “file.Encoding” type finally.

I think when the “file.autoGuessEncoding” is true, the “file.encoding” should alse be automatically set to true. It will looks more reasonable.