fix: email whitelist check

common/constants.go

@@ -55,7 +55,8 @@ var TelegramOAuthEnabled = false
 var TurnstileCheckEnabled = false
 var RegisterEnabled = true
 
-var EmailDomainRestrictionEnabled = false
+var EmailDomainRestrictionEnabled = false // 是否启用邮箱域名限制
+var EmailAliasRestrictionEnabled = false  // 是否启用邮箱别名限制
 var EmailDomainWhitelist = []string{
 	"gmail.com",
 	"163.com",