fix(tests): add mock methods for cache OAuth state in new question notification tests

internal/service/notification/new_question_notification_test.go

@@ -798,3 +798,18 @@ func (newQuestionNotificationTestUserExternalLoginRepo) GetCacheUserExternalLogi
 	context.Context, string) (*schema.ExternalLoginUserInfoCache, error) {
 	return nil, nil
 }
+
+func (newQuestionNotificationTestUserExternalLoginRepo) SetCacheOAuthState(
+	context.Context, string, *schema.ExternalLoginOAuthState, time.Duration) error {
+	return nil
+}
+
+func (newQuestionNotificationTestUserExternalLoginRepo) GetCacheOAuthState(
+	context.Context, string) (*schema.ExternalLoginOAuthState, error) {
+	return nil, nil
+}
+
+func (newQuestionNotificationTestUserExternalLoginRepo) DeleteCacheOAuthState(
+	context.Context, string) error {
+	return nil
+}