RCS1223 does not work with new no-braces feature

[RenderMichael]

Product and Version Used:

4.12.7

Steps to Reproduce:

Use the new no-braces feature, which was expanded from records to any type in C# 12

public readonly ref struct Dummy;

Then invoke the Add DebuggerDisplay attribute fixer.

Actual Behavior:

[DebuggerDisplay("{DebuggerDisplay,nq}")]
public readonly ref struct Dummy [DebuggerBrowsable(DebuggerBrowsableState.Never)]
private string DebuggerDisplay
{
    get
    {
        return ToString();
    }
};

does not compile.

Expected Behavior:

[DebuggerDisplay("{DebuggerDisplay,nq}")]
public readonly ref struct Dummy
{
    [DebuggerBrowsable(DebuggerBrowsableState.Never)]
    private string DebuggerDisplay
    {
        get
        {
            return ToString();
        }
    }
}

The expected I'm putting here is what you get if you add braces to the type before invoking the fixer.

(technically it doesn't compile because ref-structs cannot call ToStrings that are not defined. Maybe that's a good compilation failure, or maybe that's a bug. Either way, unrelated).