* test: add tests for pkg/events/fake package
Add comprehensive test coverage for the fake EventEmitter implementation.
Tests cover:
- NewFakeEventEmitter() initialization
- Add() method with single and multiple events
- Different event types (Create, Update, Delete, Failed)
- Mock verification with specific events and any event type
- Edge case: empty events (panics as documented)
Improves code coverage from 0% to 100% for pkg/events/fake package.
Related to issue #5150
* fix: update copyright year to 2026