Events v2: only return user's own drafts as part of event

[rikukissa]

This makes me think we need to give these drafts a bit more thought:

• In the current "legacy events" you can create a local draft at any point in the process. So even after it's declared or validated. This is as part of whatever process you are completing at the time.
• Should we actually make it so that there is no DRAFT action but rather any action can have draft: true?

[github-actions]

Oops! Looks like you forgot to update the changelog. When updating CHANGELOG.md, please consider the following:

• Changelog is read by country implementors who might not always be familiar with all technical details of OpenCRVS. Keep language high-level, user friendly and avoid technical references to internals.
• Answer "What's new?", "Why was the change made?" and "Why should I care?" for each change.
• If it's a breaking change, include a migration guide answering "What do I need to do to upgrade?".

[makelicious]

Looks good. Let's update test cases to capture the requirement