src/vs/workbench/api/browser/mainThreadWebviewPanels.ts/reviveWebviewIcon
function reviveWebviewIcon(value: extHostProtocol.IWebviewIconPath | undefined): WebviewIcons | undefined {
	if (!value) {
		return undefined;
	}
	return {
		light: URI.revive(value.light),
		dark: URI.revive(value.dark),
	};
}