fix(test): restore identity repo integration imports

backend/internal/repository/user_profile_identity_repo_contract_test.go

@@ -10,6 +10,8 @@ import (
 	"time"
 
 	dbent "github.com/Wei-Shaw/sub2api/ent"
+	"github.com/Wei-Shaw/sub2api/ent/authidentity"
+	"github.com/Wei-Shaw/sub2api/ent/authidentitychannel"
 	"github.com/Wei-Shaw/sub2api/internal/service"
 	"github.com/stretchr/testify/suite"
 )