Razor syntax highlighting broken in VSCode when using nullable operator

[MatthewS2077]

Describe the bug:
In VSCode, Razor syntax highlighting is broken when using nullable operator "?"

Version used:
VSCode 1.69.2
.Net 7.0.100-preview.6.22352.1

To reproduce:
Open the following in VSCode

@Param1
@Param2

@code {
    [Parameter]
    public string? Param1 { get; set; }

    [Parameter]
    public string? Param2 { get; set; }

    private string Foo()
    {
        return "bar";
    }
}

Expected behavior:
Razor syntax highlighting should work as expected when using nullable operator "?" (see screenshot 1)

Actual behavior:
Razor syntax highlighting is broken when using nullable operator "?" (see screenshot 2)

Additional context:

Screenshot 1 - Syntax highlighting working when not using nullable operator

Screenshot 2 - Syntax highlighting not working when using nullable operator

[allisonchou]

Additional report: #6144

[allisonchou]

Additional report: #7076

[allisonchou]

Additional report: #8184