[Bug]: Playground goes blank when choosing TCGC output

[anuchandy]

Describe the bug

The following spec in playground outputs in openapi3 format but the playground crashes when choosing TCGC output

import "@azure-tools/typespec-azure-core";
import "@azure-tools/typespec-client-generator-core";
import "@typespec/http";
import "@typespec/rest";

using global.Azure.Core.Foundations;
using Azure.ClientGenerator.Core;
using TypeSpec.Http;
using TypeSpec.Versioning;

@service(#{ title: "Contoso" })
namespace Contoso {

  model GetUserOptions {
    @query userid?: string;
    @query zipcode?: string;
  }

  model User {
    name: string;
    age: int16;
  }

  @get
  @route("/get-user")
  op getUser(p: GetUserOptions) : User;

}

namespace Customization {
  op getUserCustomization(
    options?: Contoso.GetUserOptions,
  ): void;
  @@override(Contoso.getUser, Customization.getUserCustomization);
}

but if I slightly change the spec to the following, the TCGC output appears

import "@azure-tools/typespec-azure-core";
import "@azure-tools/typespec-client-generator-core";
import "@typespec/http";
import "@typespec/rest";
import "@typespec/versioning";

using global.Azure.Core.Foundations;
using Azure.ClientGenerator.Core;
using TypeSpec.Http;
using TypeSpec.Versioning;

@service(#{ title: "Contoso" })
@versioned(Versions)
namespace Contoso {
  enum Versions {
    @useDependency(global.Azure.Core.Versions.v1_0_Preview_2)
    v2022_12_01_preview: "2022-12-01-preview",
  }

  model Options {
    @query userid?: string;
    @query zipcode?: string;
  }

  model User {
    name: string;
    age: uint16;
  }

  @get
  @route("/get-user")
  op getUser is global.Azure.Core.RpcOperation<Options, User>;
}

namespace Customization {
  op getUserCustomization(
    options?: Contoso.Options,
    ...ApiVersionParameter,
  ): void;
  @@override(Contoso.getUser, Customization.getUserCustomization);
}

Reproduction

Here is the link to the failing playground, go to the link and change output to TCGC

Checklist

• Follow our Code of Conduct
• Check that there isn't already an issue that request the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion.
• The provided reproduction is a minimal reproducible example of the bug.