fix tests. new product advisories enhancements

docs/notifications/security/tenant-approvals.md

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+# Tenant Approvals
+
+This document describes the tenant approval process for notification delivery.
+
+## Overview
+
+Tenant approvals ensure that notifications are only sent to approved tenants with proper configuration.
+
+## Approval Process
+
+1. Tenant submits a request for notification access
+2. Admin reviews the request and approves/denies
+3. Approved tenants can configure notification channels
+
+## Security Considerations
+
+- All approval decisions are logged for audit purposes
+- Approvals can be revoked at any time
+- Cross-tenant notifications are blocked by default