[Feature]: IAPIRequestContext.GetAsync should be cancellable

[lonix1]

🚀 Feature Request

The API doesn't support CancellationToken anywhere. In issue #1652 it was explained that cancellation would be pointless in many UI-based cases.

However there are cases where it would be actually useful, and expected according to .NET standards.

For example: page.APIRequest.GetAsync. That initiates a network call and should definitely be cancellable.

Example

await page.APIRequest.GetAsync("https://www.example.com/foo", cancellationToken);

Motivation

A network call that cannot be cancelled is not standard .NET and surprising.

Notes

If the method uses HttpClient "under the hood", then one should simply provide it with the cancellation token. It probably that simple.