vcFormat: on-type formatting on Enter should not indent the next existing line

Bug type: Language Service

Describe the bug
Version: 1.57.1 (user setup)
Commit: 507ce72a4466fbb27b715c3722558bb15afa9f48
Date: 2021-06-17T13:28:07.755Z
Electron: 12.0.7
Chrome: 89.0.4389.128
Node.js: 14.16.0
V8: 8.9.255.25-electron.0
OS: Windows_NT x64 10.0.19042
C/C++ Extension Version: 1.5.1

Steps to reproduce

1. Open a.cpp using the settings.json
2. Set cursor after if (a < 10)
3. Press Enter
4. See that before return was inserted 4 spaces.
5. Try this in VS and see that VS does not insert spaces in that case.

a.cpp

void f(int a) {
    if (a < 10)
    return;
}

settings.json

{
    "editor.formatOnType": true,
    "C_Cpp.formatting": "vcFormat",
}