[Backend] Enable SPP when SPP profile is attached

Enable Secret Push Protection (SPP) feature for projects that have a secret_detection profile attached to them.

Requirements

• Modify SecretPushProtection::EligibilityChecker to handle SD profile
• Ensure that projects without an SPP profile can still have SPP enabled through other means

Acceptance Criteria

• Projects with attached SD profiles should have SPP feature enabled
• SecretPushProtection::EligibilityChecker correctly identifies projects with SPP profiles
• Projects without SPP profiles can still access SPP through existing methods
• No regression in existing SPP functionality for projects without profiles

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Description was generated using AI