Test case FilteredList modified by TabObservableList.reorder

[koppor]

Follow-up to JabRef#13245; Refs JabRef#12921

Public issue: JDK-8359020 : TabObservableList.reorder changes content of filtered list

Submitted a JavaFX error report - internal review ID : 9078592 (refs https://github.com/JabRef/pull/13244#issuecomment-2940155513)

Mandatory checks

• I own the copyright of the code submitted and I license it under the MIT license
• [/] Change in CHANGELOG.md described in a way that is understandable for the average user (if change is visible to the user)
• [/] Tests created for changes (if applicable)
• [/] Manually tested changed features in running JabRef (always required)
• [/] Screenshots added in PR description (if change is visible to the user)
• [/] 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.