feat: split LogoutListener from AttributeListener

[denischilik]

Summary

• Introduces KitIntegration.LogoutListener as a separate contract from the deprecated AttributeListener.
• KitManagerImpl.logout() invokes logout() only on kits that implement LogoutListener.
• All embedded kits that previously implemented AttributeListener now explicitly implement LogoutListener as well.
• AttributeListenerTestKit implements both interfaces for instrumented tests.

Replaces PR #683 (branch renamed to feature/split-logout-listener).

[cursor]

PR Summary

Medium Risk
Medium risk because it changes the kit integration interface contract: logout forwarding now depends on implementing the new KitIntegration.LogoutListener, which could break or alter behavior for any kits that relied on AttributeListener.logout() without updating.

Overview
Introduces a new KitIntegration.LogoutListener interface and removes logout() from the deprecated AttributeListener, decoupling logout handling from user-attribute support.

Updates KitManagerImpl.logout() to invoke logout only on providers implementing LogoutListener, and updates embedded kits plus the AttributeListenerTestKit to explicitly implement LogoutListener so they continue receiving logout callbacks.

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[sonarqubecloud]

Quality Gate failed

Failed conditions
9.8% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud