Fix the F3 shortcut key

[priyanshu16095]

Fixes #10938

The fix ensures that the F3 shortcut functions as expected without need to open the right click context menu each time.

Mandatory checks

• I own the copyright of the code submitted and I licence 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 (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.

[priyanshu16095]

Recording.2025-01-27.mp4

Now works right after opening JabRef.

[Siedlerchr]

Thanks again for the many fixes so far!

[priyanshu16095]

So happy my first PR got merged. Thanks to the amazing maintainers!