Thank you for reporting this problem. We'll get it fixed for the internal builds, but for the moment you can use the following workaround:
"//dev.virtualearth.net/REST/v1/Imagery/Metadata/#= imagerySet #?output=json&jsonp=bingTileParams&include=ImageryProviders&key=#= key #";
Place it after the Kendo scripts are included on the page, but before the Map widget.
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