Option to not export closed objects
<!--IssueSummary start-->
<details>
<summary>
Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards.
</summary>
- [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=223129)
</details>
<!--IssueSummary end-->
## Problem
Project exports can be very large, even to the point of not being able to re-import. While we are looking to optimize export/import and reduce the size by [limiting project history](https://gitlab.com/gitlab-org/gitlab/-/issues/39168), there are cases where the users just want to migrate forward open and active work and leave anything that's closed behind, which would reduce the size of their export.
## Solution
Provide an option to not export any closed objects.
List:
* TBD
issue