IndentSwitchCaseSection handled improperly if case only contains a block

[meitinger]

How to reproduce:

Add/set the following in omnisharp.json:

{
    "FormattingOptions": {
        "IndentSwitchCaseSection": false
    }
}

Format the following C# code:

class Test
{
    public int Foo(int bar)
    {
        switch (bar)
        {
            case 1:
                return 1;
            case 2:
                {
                    return 2;
                }
            case 3:
                ;
                {
                    return 3;
                }
        }
    }
}

Expected result:

class Test
{
    public int Foo(int bar)
    {
        switch (bar)
        {
            case 1:
            return 1;
            case 2:
            {
                return 2;
            }
            case 3:
            ;
            {
                return 3;
            }
        }
    }
}

Actual result:

class Test
{
    public int Foo(int bar)
    {
        switch (bar)
        {
            case 1:
            return 1;
            case 2:
                {
                    return 2;
                }
            case 3:
            ;
            {
                return 3;
            }
        }
    }
}

[DustinCampbell]

The issue here is that there are two IndentSwitchCaseSection settings support by the C# formatter in Roslyn, but OmniSharp only exposes one of them. The other option is IndentSwitchCaseSectionWhenBlock, which OmniSharp needs to support.