[DOC] fast-api ext demo: "non-annotated attribute was detected"

[jseguillon]

Expected Behavior

Open dapr fastapi ext doc, copy paste example and make it work

Actual Behavior

Pydantic refuses example:

== APP == Traceback (most recent call last):
== APP ==   File "/home/jse/python-sdk/test.py", line 9, in <module>
== APP ==     class User(BaseModel):
== APP ==   File "/home/jse/python-sdk/venv/lib/python3.10/site-packages/pydantic/_internal/_model_construction.py", line 113, in __new__
== APP ==     private_attributes = inspect_namespace(
== APP ==   File "/home/jse/python-sdk/venv/lib/python3.10/site-packages/pydantic/_internal/_model_construction.py", line 450, in inspect_namespace
== APP ==     raise PydanticUserError(
== APP == pydantic.errors.PydanticUserError: A non-annotated attribute was detected: `name = 'Jane Doe'`. All model fields require a type annotation; if `name` is not meant to be a field, you may be able to resolve this error by annotating it as a `ClassVar` or updating `model_config['ignored_types']`.
== APP == 
== APP == For further information visit https://errors.pydantic.dev/2.10/u/model-field-missing-annotation

Steps to Reproduce the Problem

Copy paste example and run

Release Note

Release note not applicable I think.

[dapr-bot]

This issue has been automatically marked as stale because it has not had activity in the last 60 days. It will be closed in the next 7 days unless it is tagged (pinned, good first issue, help wanted or triaged/resolved) or other activity occurs. Thank you for your contributions.

[dapr-bot]

This issue has been automatically closed because it has not had activity in the last 67 days. If this issue is still valid, please ping a maintainer and ask them to label it as pinned, good first issue, help wanted or triaged/resolved. Thank you for your contributions.

[elena-kolevska]

Fixed in #776