`ariadne.wsgi.GraphQL.get_request_data` declares `dict` as return type but doesn't check for it.

[rafalp]

get_request_data calls extract_data_from_json_request that returns Any which is then casted to dict without any verification of it's type.

This verification still happens in graphql_sync so we are covered, but currently type is lying to developers working with the code.

We should change it's return type to Any and update the docs to reflect this.

[rexton12]

Add an explicit check in your code to ensure that the get_request_data method returns a dictionary. Here's an example of how you can modify the get_request_data method to check for the return type:

Example:
from typing import Dict

class MyGraphQL(ariadne.wsgi.GraphQL):
def get_request_data(self, request):
data = super().get_request_data(request)
if not isinstance(data, Dict):
raise ValueError("Unexpected request data type: expected dictionary")
return data