Use AbortSignal for container loading cancelation

[anthony-murphy]

related to #1069

For cancellation of container loading we should use abort signal.

Open question: should this be added to IRequest, or as an added parameter to call abortable calls?

Docs:
https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal

polyfill:
https://www.npmjs.com/package/abort-controller

[ghost]

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