Replace UtilityService.punyHost(url) with new URL(url).host

[saschanaz]

misskey/packages/backend/src/core/UtilityService.ts

Lines 119 to 123 in f123be3

	public punyHost(url: string): string {
	const urlObj = new URL(url);
	const host = `${this.toPuny(urlObj.hostname)}${urlObj.port.length > 0 ? ':' + urlObj.port : ''}`;
	return host;
	}

new URL("https://mañana.com:8080").host === 'xn--maana-pta.com:8080' になるのでtoPunyやurlObj.port使う必要はなさそうです