Address obsoleted `RoslynTokenTypes`

[maryamariyan]

As with PR #8764 need to address obsoleted RoslynTokenTypes. Usage seen in:

razor/src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/Semantic/Models/RazorSemanticTokensLegend.cs

Lines 72 to 74 in be8988b

	#pragma warning disable CS0618 // RoslynTokenTypes is obsolete
	builder.AddRange(RazorSemanticTokensAccessor.RoslynTokenTypes);
	#pragma warning restore CS0618

/cc @davidwengier