Prevent auto-insertion of summary docstrings

## Environment data
VS Code version: 1.87.2
C# Extension version: 2.22.3

## Steps to reproduce

1. Type "///"

## Expected behavior

Nothing should happen.

## Actual behavior

This text is auto-inserted:

///
///
///

Furthermore, pressing return after any line that starts with a "///" auto-inserts another "///" on the next line.

## Additional context

Is there an existing way to disable this behavior?