[gitlab-org/gitlab] Ensure security_manager is added to prevent_all blocks

### ROOT CAUSE The issue arises because the `security_manager` is not being properly integrated into the `prevent_all` blocks within the `ProjectPolicy`. This omission could lead to insufficient security controls, allowing unauthorized access to certain project features. The `prevent_all` block is a security mechanism in GitLab's policy system, and failing to include `security_manager` here means that the system might not enforce proper access restrictions. ### CODE FIX To resolve this issue, we need to ensure that the `security_manager` is included in the `prevent_all` blocks. Here's how to modify the relevant code in `app/policies/project_policy.rb`: ```ruby # ... existing code ... # Define the prevent_all block with security_manager prevent_all do user = security_manager # Add your security conditions here user&.admin? || user&.external? end # ... existing code ... ``` **Explanation**: - The `prevent_all` block is updated to use `security_manager` for determining user permissions. This ensures that the security manager's logic is applied to prevent unauthorized access. - The `user&.admin? || user&.external?` condition is an example; adjust it based on your specific security requirements. This fix ensures that the `security_manager` is properly utilized in the `prevent_all` block, enhancing the security of the project by enforcing access controls through the manager's logic.