Code sample highlighting removed after load

Describe the bug

Once the API documentation has finished loading, all free-form code samples that were previously highlighted show up as plaintext (with the DOM nodes responsible for highlighting removed from the <code> blocks).

This only affects redoc-cli bundle app.yaml. redoc-cli serve app.yaml keeps the code highlighting as expected.

Expected behaviour

Code samples are highlighted in production builds.

Minimal reproducible OpenAPI snippet(if possible)

(Note: more obvious with larger spec files that take longer to render DOM - this example is near instant)

// package.json
{
  "scripts": {
    "build": "openapi bundle --output app.yaml",
    "serve": "redoc-cli serve app.yaml",
    "bundle": "redoc-cli bundle app.yaml --output docs/index.html",
    "start": "npm run build && npm run serve",
    "start:bundle": "npm run build && npm run bundle"
  },
  "dependencies": {
    "@redocly/openapi-cli": "^1.0.0-beta.76",
    "redoc-cli": "^0.13.2"
  }
}

# openapi.yaml
openapi: 3.0.2
info:
  title:  API
  version: 0.1.0
  description:
    $ref: "./description.md"
servers:
  - url: 'https://api.example.com'
    description: Production Server

<!-- documentation.md -->
# Introduction

### Registration Request

#### application/json

```json5
{
    client_name: "<desired client name>",
    token_endpoint_auth_method: "client_secret_basic|client_secret_post",
    scopes: ["<desired scope>"], // Optional, if not provided you will obtain default scopes
    grant_types: ["authorization_code", "client_credentials", "refresh_token"], // Optional, default is authorization_code
    redirect_uris: ["<HTTPS URI>"], // Required if authorization_code grant was requested
    isProtectedResource: true|false,
    scopePrefix: "<scope prefix>"   // Required for protected resources
}

Screenshots

https://user-images.githubusercontent.com/3440094/147754111-63abeedb-c41a-490a-85eb-5eceae8ac147.mov