### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

Authorization headers being sent to API gateway are received on lambdas as "empty string"

### Expected Behavior

_No response_

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

Run a API Gateway with lambda integration

### Environment

```markdown
- OS:
- LocalStack:
```


### Anything else?

_No response_
"""Returns true if origin is allowed to perform cors requests, false otherwise."""
        origin = headers.get("origin")
        referer = headers.get("referer")
        if origin:
            return CorsEnforcer._is_in_allowed_origins(ALLOWED_CORS_ORIGINS, origin)
        elif referer:
            referer_uri = "{uri.scheme}://{uri.netloc}".format(uri=urlparse(referer))
            return CorsEnforcer._is_in_allowed_origins(ALLOWED_CORS_ORIGINS, referer_uri)
        
        return True
    @staticmethod
    def _is_in_allowed_origins(allowed_origins: List[str], origin: str) -> bool:
        """Returns true if the `origin` is in the `allowed_origins`."""
        for allowed_origin in allowed_origins:
            if allowed_origin == "*" or origin == allowed_origin:
                return True
        return False
class CorsResponseEnricher(Handler):
    """
    ResponseHandler which adds Cross-Origin-Request-Sharing (CORS) headers (Access-Control-*) to the response.
    """
    def __call__(self, chain: HandlerChain, context: RequestContext, response: Response):