Fix save order preferences

[koppor]

• Fixes Entries not reordered after save JabRef/jabref#9869
• Fixes https://github.com/JabRef/jabref-issue-melting-pot/issues/171

Mandatory checks

• Change in CHANGELOG.md described in a way that is understandable for the average user (if applicable)
• Tests created for changes (if applicable)
• Manually tested changed features in running JabRef (always required)
• Screenshots added in PR description (for UI changes)
• Checked developer's documentation: Is the information available and up to date? If not, I outlined it in this pull request.
• Checked documentation: Is the information available and up to date? If not, I created an issue at https://github.com/JabRef/user-documentation/issues or, even better, I submitted a pull request to the documentation repository.

[github-actions]

Your code currently does not meet JabRef's code guidelines. The tool reviewdog already placed comments on GitHub to indicate the places. See the tab "Files" in you PR. Please carefully follow the setup guide for the codestyle. Afterwards, please run checkstyle locally and fix the issues.

More information on code quality in JabRef is available at https://devdocs.jabref.org/getting-into-the-code/development-strategy.html.