Pilfer `TypedEventHandlerExtensions` from WCT#404

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zadjii-msft wants to merge 3 commits intomainfrom dev/migrie/f/pilfer-async-stream-icons

+78-3

Commits on Feb 4, 2025

I think this pilfers the InvokeAsync as mentioned in #333
zadjii-msft
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Commits on Feb 5, 2025