[But Report] im-select messes vim-surround

Environment

• macOS: 10.14.6
• VSCode: 1.56.2
• VSCodeVim: 1.20.3
• im: com.apple.keylayout.US in Normal, com.sogou.inputmethod.sogou.pinyin in Insert

To Reproduce
Steps to reproduce the behavior:

1. Setting im-select
2. Switch to com.sogou.inputmethod.sogou.pinyin in Insert mode, exit to Normal mode and switch to com.apple.keylayout.US
3. In Normal mode, do surround ysiw, the back quote is interpreted as ·by thecom.sogou.inputmethod.sogou.pinyin`

The same problem happens on other characters like ', ".

Similar issues has been report in #3699, #4536.

In #3699, C-[ is interpreted C-【. This is avoided with an ugly fix by mapping C-【 to C-[ in Insert mode. But for me, mapping for ', " is unacceptable. This is not combination keys, just normal quotes symbols.

Currently I find a way to always switch back to com.apple.keylayout.US in Insert mode. This is what exactly #4536 required exactly.

  "vim.autoSwitchInputMethod.enable": true,
  "vim.autoSwitchInputMethod.defaultIM": "com.apple.keylayout.US",
  "vim.autoSwitchInputMethod.obtainIMCmd": "/usr/local/bin/im-select",
  "vim.autoSwitchInputMethod.switchIMCmd": "/usr/local/bin/im-select com.apple.keylayout.US {im}",

This is kind of hack, cause im-select on macOS accept multi values but only the 1st is used.

Start by tracing the autoSwitchInputMethod settings and the im-select command configuration shown in the issue, then reproduce the quote-key behavior on macOS with the listed input methods. Done means Normal-mode surround commands interpret back quotes, apostrophes, and quotation marks correctly without requiring the reported mapping hack.