Fix certificates getting null domain names whgen no cn exists

backend/internal/certificate.js

@@ -614,7 +614,7 @@ const internalCertificate = {
 		const certificate = await internalCertificate.update(access, {
 			id: data.id,
 			expires_on: moment(validations.certificate.dates.to, "X").format("YYYY-MM-DD HH:mm:ss"),
-			domain_names: [validations.certificate.cn],
+			domain_names: validations.certificate.cn ? [validations.certificate.cn] : [],
 			meta: _.clone(row.meta), // Prevent the update method from changing this value that we'll use later
 		});
 

backend/models/certificate.js

@@ -18,7 +18,7 @@ const boolFields = ["is_deleted"];
 const cleanDomainNames = (domainNames) => {
 	// Sort domain_names
 	if (typeof domainNames !== "undefined") {
-		const newDomainNames = domainNames.filter((name) => name !== null);
+		const newDomainNames = domainNames.filter((name) => name != null);
 		newDomainNames.sort();
 		return newDomainNames;
 	}