src/vs/workbench/api/browser/mainThreadWebviews.ts/MainThreadWebviews/isSupportedLink
class MainThreadWebviews:	private isSupportedLink(webview: Webview, link: URI): boolean {
		if (MainThreadWebviews.standardSupportedLinkSchemes.has(link.scheme)) {
			return true;
		}
		if (!isWeb && this._productService.urlProtocol === link.scheme) {
			return true;
		}
		return !!webview.contentOptions.enableCommandUris && link.scheme === Schemas.command;
	}