Issue number: #3732

Summary

Changes

Please provide a summary of what's being changed

This PR fixes a bug when handling event handler parameters that used aliases.

def test():
    app = APIGatewayRestResolver(enable_validation=True)

    class FunkyTown(BaseModel):
        parameter: str

    @app.get("/my/path")
    def my_path(
        parameter: Annotated[str | None, Query(alias="parameter1")] = None,
    ) -> Response[FunkyTown]:
        assert isinstance(app.current_event, APIGatewayProxyEvent)

        assert parameter == "value1"
        return Response(200, content_types.APPLICATION_JSON, FunkyTown(parameter=parameter))

    result = app(load_event("apiGatewayProxyEvent.json"), {})

    print(result)
    assert result["statusCode"] == 200

User experience

Please share what the user experience looks like before and after this change

After this PR, aliases should be correctly supported.

Checklist

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• Meet tenets criteria
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented
• PR title follows conventional commit semantics

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