[BUG] user_followers_gql_chunk() raises AttributeError

[luca-arch]

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Describe the bug

AttributeError: 'NoneType' object has no attribute 'cookies'

To Reproduce

1. Log in via session as per Use Sessions
2. Await user_followers_gql_chunk()
3. See the exception

Traceback

INFO:aiograpi:https://i.instagram.com/api/v1/feed/timeline/
INFO:httpx:HTTP Request: POST https://i.instagram.com/api/v1/feed/timeline/ "HTTP/1.1 200 OK"
INFO:graphql_request:*****@mail.com [200] POST https://i.instagram.com/api/v1/feed/timeline/ (269.0.0.18.75, OnePlus 6T Dev)
ERROR:root:'NoneType' object has no attribute 'cookies'
Traceback (most recent call last):
  File "/mnt/modules/instafollow/worker/copier.py", line 134, in process
    await copy_user_followers()
  File "/mnt/modules/instafollow/worker/copier.py", line 119, in copy_user_followers
    resp = await ig_client.user_followers_gql_chunk(user_id, end_cursor = None)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/aiograpi/mixins/user.py", line 732, in user_followers_gql_chunk
    self.inject_sessionid_to_public()
  File "/usr/local/lib/python3.12/site-packages/aiograpi/mixins/auth.py", line 851, in inject_sessionid_to_public
    self.graphql.set_cookies(cookie)
  File "/usr/local/lib/python3.12/site-packages/aiograpi/reqwests.py", line 87, in set_cookies
    self._client.cookies.set(k, v)
    ^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'cookies'

Desktop (please complete the following information):

• OS: python:3.12.5-bookworm (arm Docker image)
• Python version 3.12.5
• aiograpi 0.0.3
• moveipy n/a
• imagemagick n/a

Additional context
I think this relates to #59, as the self._set_client() setter is never invoked

[luca-arch]

Current workaround:

async def my_copy_user_followers(user_id: int, end_cursor: str = None):
+   # Workaround for https://github.com/subzeroid/aiograpi/issues/90
+   ig_client.graphql._set_client()
    resp = await ig_client.user_followers_gql_chunk(user_id, end_cursor = None)