Perlindungan Hukum Investor Going Concern Terhadap Akta Pernyataan Keputusan Sirkuler Para Pemegang Saham Yang Dibuat Tanpa Persetujuan Kurator (Studi Putusan Mahkamah Agung Nomor 522 K/Pdt.Sus-Pailit/2021) = Legal Protection of Investors Going Concern Against the Deed of Circular Decisions of Shareholders that Made Without the Curator's Approval (Study of Supreme Court Decision Number 522 K/Pdt.Sus-Pailit/2021)