[Bug]: Schema and Docs doesn't work

[robertSt7]

Expected behavior

Show Schema and Docs

Actual behavior

Uncaught Error: {
  "errors": [
    {
      "message": "GraphQL introspection is not allowed, but the query contained __schema or __type",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "extensions": {
        "file": "/var/www/html/vendor/webonyx/graphql-php/src/Validator/Rules/DisableIntrospection.php",
        "line": 36
      }
    }
  ]
}
    next http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:98
    b http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:98
    E http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:98
    value http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:98
    p http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:124
middleware.js:98:43578
    next http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:98
    b http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:98
    E http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:98
    value http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:98
    p http://host.docker.internal/bundles/pimcoredatahub/playground/middleware.js:124

Steps to reproduce

• Open the GraphQL Playground
• Try to open Schema and Docs

[dvesh3]

Regression of #716

[dvesh3]

The issue exists in Playground (only warnings in console) when introspection: true

[github-actions]

Thanks a lot for reporting the issue. We did not consider the issue as "Pimcore:Priority", "Pimcore:ToDo" or "Pimcore:Backlog", so we're not going to work on that anytime soon. Please create a pull request to fix the issue if this is a bug report. We'll then review it as quickly as possible. If you're interested in contributing a feature, please contact us first here before creating a pull request. We'll then decide whether we'd accept it or not. Thanks for your understanding.