[graphiql] graphql.json textmate grammar references undefined rule `#literal-quasi-embedded`

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

Parsing graphql.json textmate file results in errors because it references a local rule that has not been defined `#literal-quasi-embedded`.

### Expected Behavior

Parsing graphql.json textmate file is possible without warnings.

### Steps To Reproduce

_No response_

### Environment

_No response_

### Anything else?

As a solution, either all `{ "include": "#literal-quasi-embedded" }` directives should be removed from https://github.com/graphql/graphiql/blob/main/packages/vscode-graphql-syntax/grammars/graphql.json or the `literal-quasi-embedded` should be defined.