Python generates ambiguous type imports

### What are you generating using Kiota, clients or plugins?

API Client/SDK

### In what context or format are you using Kiota?

Nuget tool

### Client library/SDK language

Python

### Describe the bug

Generating Microsoft Graph Beta using mypy 1.19.1 as we do in the integration tests results in errors

https://github.com/microsoft/kiota/actions/runs/22319588027/job/64574290141

Under mypy 1.17.x as we use in the python repos these errors are non present.

### Expected behavior

We generate code for Microsoft Graph that will compile using the stricter settings of mypy 1.19.1

### How to reproduce

Generate Microsoft Graph Beta and try to build using mypy 1.19.1

### Open API description file

_No response_

### Kiota Version

1.30

### Latest Kiota version known to work for scenario above?(Not required)

_No response_

### Known Workarounds

relax mypy to 1.17.x

### Configuration

_No response_

### Debug output

Click to expand log
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### Other information

_No response_

Start by reproducing Microsoft Graph Beta generation with Kiota 1.30 and building the generated Python client with mypy 1.19.1, using the integration-test setup and linked workflow run as references. Inspect the generated type imports and mypy errors; done means the generated client passes the stricter mypy checks without requiring a downgrade to 1.17.x.

Written by the indexing model from the issue text.