reportArgumentType error during type checking when using non-default polling_mode #77

Describe the bug

It looks like there are typing issue when I use polling_mode that is different from default AutoPollingMode

To reproduce

1. Prepare a simple script that creates client with non-defaut polling_mode(save it to file with name configcat_issue.py)

import configcatclient
from configcatclient.configcatoptions import ConfigCatOptions
from configcatclient.pollingmode import PollingMode

client = configcatclient.get(
    "my-key",
    ConfigCatOptions(polling_mode=PollingMode.lazy_load()),
)

client.close()

2. Run type checker(for example pyright)

pyright configcat_issue.py

3. There is an error in output

/.../configcat_issue.py
  /.../configcat_issue.py:7:35 - error: Argument of type "LazyLoadingMode" cannot be assigned to parameter "polling_mode" of type "AutoPollingMode" in function "__init__"
    "LazyLoadingMode" is not assignable to "AutoPollingMode" (reportArgumentType)
1 error, 0 warnings, 0 informations

Expected behavior

Type checker shouldn't have any errors on given script