[#213] test public API open_or_create_with_attributes

[xieyuschen]

Notes for Reviewer

• Public API open_or_create_with_attributes should be tested.
• update the doc of open_or_create_with_attributes.

Pre-Review Checklist for the PR Author

1. [X] Add sensible notes for the reviewer
2. [X] PR title is short, expressive and meaningful
3. [X] Relevant issues are linked in the References section
4. [X] Every source code file has a copyright header with SPDX-License-Identifier: Apache-2.0 OR MIT
5. [X] Branch follows the naming format (iox2-123-introduce-posix-ipc-example)
6. [X] Commits messages are according to this guideline
   • [X] Commit messages have the issue ID ([#123] Add posix ipc example)
   • [X] Commit author matches Eclipse Contributor Agreement (and ECA is signed)
7. [X] Tests follow the best practice for testing
8. [X] Changelog updated in the unreleased section including API breaking changes
9. [ ] Assign PR to reviewer
10. [X] All checks have passed (except task-list-completed)

Checklist for the PR Reviewer

• [ ] Commits are properly organized and messages are according to the guideline
• [ ] Unit tests have been written for new behavior
• [ ] Public API is documented
• [ ] PR title describes the changes

Post-review Checklist for the PR Author

1. [ ] All open points are addressed and tracked via issues

References

Closes #

[xieyuschen]

nvm, I have gave a wrong branch name iox2-60 here, i will create another one. sorry for missing this part.