Fix user profile writes on postgres conflicts

backend/internal/service/auth_email_binding.go

@@ -277,7 +277,9 @@ func ensureBoundEmailAuthIdentityWithClient(
 		).
 		DoNothing().
 		Exec(ctx); err != nil {
-		return err
+		if !isSQLNoRowsError(err) {
+			return err
+		}
 	}
 
 	identity, err := client.AuthIdentity.Query().