Resolve the issue with IAsyncEnumerable

[WanjohiSammy]

Issues

This pull request fixes #1450.

Description

Currently, when returning an IAsyncEnumerable from an async iterator method, it is not recognized as an IAsyncEnumerable by the ODataOutputFormatter.

This change handles the scenarios where ODataResourceSetSerializer processes objects that implement IAsyncEnumerable<> indirectly through interfaces. This ensures that such objects are correctly recognized as IAsyncEnumerable<> and processed accordingly.

For example, both Typed and Generic variants should be identified as IAsyncEnumerable<> and processed correctly

1. Typed

 asyncEnumerable = GenericAsyncEnumerableWithDelay(asyncEnumerable, TimeSpan.FromSeconds(1));

...

private async IAsyncEnumerable<Customer> TypedAsyncEnumerableWithDelay(IAsyncEnumerable<Customer> asyncEnumerable, 
    TimeSpan delay)
{
    await foreach (var entity in asyncEnumerable)
    {
        await Task.Delay(delay);
        yield return entity;
    }
}

2. Generic

 asyncEnumerable = TypedAsyncEnumerableWithDelay(asyncEnumerable, TimeSpan.FromSeconds(1));

...

private async IAsyncEnumerable<TEntity> GenericAsyncEnumerableWithDelay<TEntity>(IAsyncEnumerable<TEntity> asyncEnumerable, 
    TimeSpan delay)
{
    await foreach (var entity in asyncEnumerable)
    {
        await Task.Delay(delay);
        yield return entity;
    }
}

Checklist (Uncheck if it is not completed)

• Test cases added
• Build and test with one-click build and test script passed

Additional work necessary

If documentation update is needed, please add "Docs Needed" label to the issue and provide details about the required document change in the issue.

[WanjohiSammy]

/AzurePipelines run OData-AspNetCoreOData-main-rolling-1ES

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[WanjohiSammy]

/AzurePipelines run OData-AspNetCoreOData-main-rolling-1ES

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