Generated service code uses broken import names

[joemckie]

Describe the bug

Generating code results in incorrect output for services

To Reproduce

1. Generate API spec using openapi-python-generator https://listrr.pro/swagger/v1/swagger.json listrr --use-orjson --formatter none (disabling the formatter is required, as this bug causes generation to break completely)
2. In the generated service files, check the output types, you should see something like:

() -> listrr.Contracts.Models.ListrrList
() -> listrr.Contracts.Models.API.PagedResponse`1[listrr.Contracts.Models.ListrrList]

Expected behavior

The services should use the correct models, e.g. for the above example:

() -> listrrContractsModelsListrrList
() -> listrrContractsModelsAPIPagedResponse1listrrContractsModelsListrrList

Screenshots