fix: close response body in mapping functions

[Mohammad-Dwairi]

Situation

We've noticed that HTTP responses are not closed properly in some places where we do the Request/Response mappings for OkHttp and Apollo Clients.

Task

Ensure that original responses coming from OkHttp and ApolloClient are closed properly after mapping from/to SDK HTTP models.

Action

1. Called the use() function in all response body mapping functions. use() ensures that the consumed resource is closed by calling close() function automatically.
2. Since we're closing the responses after mapping, we needed to copy the buffer from the original response in order to be able to consume it.
3. Added unit test to validate the changes.

Testing

All existing and new tests are passing ✅