Update samples for Windows App SDK

[michael-hawker]

Looks like the Override is still using CoreWindow which is a UWP concept, there's not equivalent here to show how to do this in the Windows App SDK:

https://learn.microsoft.com/en-us/windows/apps/design/input/keyboard-accelerators#override-default-keyboard-behavior

Trying to figure out how to detect a paste event to grab image data, don't think the Clipboard sample/docs have been updated either, but was looking into the keyboard detection bit first.

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Document Details

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• ID: aed663aa-9b56-8083-42e7-b5f5462e7293
• Version Independent ID: 7bb5af5e-b1cf-1c52-2c15-d3672b6531cd
• Content: Keyboard accelerators - Windows apps
• Content Source: hub/apps/design/input/keyboard-accelerators.md
• Product: reunion
• Technology: design
• GitHub Login: @Karl-Bridge-Microsoft
• Microsoft Alias: kbridge

[michael-hawker]

Related issue: #4614