Trying to write addTagHelper with quotes crashes Visual Studio

[NTaylorMullen]

If you try and write this out character by character: @addTagHelper "*, Microsoft.AspNetCore.Mvc.TagHelpers" you wont get to the end of the line, VS will crash.

Thissss is pretty bad 😄

/cc @alexgav we should probably add an end-to-end VS test for this.

[NTaylorMullen]

This is on the runtime side. We have a faulty check in our TagHelper binder: https://github.com/aspnet/Razor/blob/dev/src/Microsoft.AspNetCore.Razor.Language/TagHelperBinderSyntaxTreePass.cs#L351

[NTaylorMullen]

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