VIM Extension with VS Code - Does not preserve values on SHIFT+I

Hi, I am posting this issue on behalf of @ahanusa https://github.com/microsoft/vscode/issues/188263. The issue is as follows:

• VS Code Version: June 2023
• OS Version: MacOS Ventura (Intel)

Steps to Reproduce:

1. Install VIM extension installed (vscodevim)
2. Create and open a C# app
3. Create a class and a constructor with a single argument, let's call it foo
4. Inside constructor, type the following line: foo = foo;
5. Immediately after ending the above line, hit ESC, then SHIFT + I, then type this.
6. Notice that foo is removed.

All previous versions would preserve foo as this is how VIM is supposed to work.

You can also repro this behavior by performing bulk insert commands (CTRL + V and down arrow to bulk select, followed by SHIFT + I)

Please fix, this is absolutely crippling behavior. Thank you!

Start by reproducing the behavior in the VS Code Vim extension using the reported C# constructor example on macOS Ventura. Compare ESC, SHIFT+I, and the CTRL+V bulk-insert flow, then verify that typing this. preserves the existing foo value in both cases.