Format document changes interpolated string

[mailgerigk]

Current

Given the following code:

var code = scope $"";
code.AppendF($"{5}.{4}");

var code2 = scope $""..AppendF($"{4}.{2}");

Formatting the document will result in:

var code = scope $"";
code.AppendF($"{5}. {4}");

var code2 = scope $""..AppendF($"{4}. {2}");

Expected

Formatting the document should not change the resulting interpolated string.