Update BingMapsStyle to match imagery provided by Bing Maps

[tangtony]

From https://docs.microsoft.com/en-us/bingmaps/rest-services/imagery/get-imagery-metadata:

AerialWithLabels (Deprecated): Aerial imagery with a road overlay, using the legacy static tile service. This service is deprecated and current data will not be refreshed. New applications should instead use AerialWithLabelsOnDemand.

Road (Deprecated): Roads without additional imagery, using the legacy static tile service. This service is deprecated and current data will not be refreshed. New applications should instead use RoadOnDemand.

Related: #7128

Not sure if there's anything else that needs to be updated, but I did a quick test and it seems to work with the new values.

[cesium-concierge]

Thank you so much for the pull request @tangtony! I noticed this is your first pull request and I wanted to say welcome to the Cesium community!

The Pull Request Guidelines is a handy reference for making sure your PR gets accepted quickly, so make sure to skim that.

• ❌ Missing CONTRIBUTORS.md entry.
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[shunter]

Superseded by #7808 which also included fixes for the discard tile policy with the new imagery types.

[cesium-concierge]

Thanks for the awesome work @tangtony! Your contribution is about to launch to millions of users with the next release. 🚀

Do you mind if we tweet about it? CC @OmarShehata @slchow.