Fixed saving radio button choice under specified keywords

[DohaRamadan]

Fixed that checked-out radio buttons under specified keywords were not displayed as checked after closing and reopening the edit group window
Fixes #10248

before:

after:

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.

[ThiloteE]

wow, you are fast! Awesome :D

[ghost]

Thanks so much!!!

[HoussemNasri]

Thanks for the contribution! I tested the changes locally and couldn't replicate the bug anymore.

However, one thing that still bugs me, is when you select the "Specified keywords" option while creating a new group, none of the generation options are selected. That doesn't seem right...

@DohaRamadan do you think you can get it fixed? Maybe by selecting the first option as a default.

[HoussemNasri]

LGTM! Just the minor issue described above. Can be handled in a later pull request if it's too much trouble.

[DohaRamadan]

Sure, i will do it no problem.
Should i add it to this pull request or to a new one?

[HoussemNasri]

It's relevant to the pull request purpose, so I would put it here, but if it's gonna take time, you can always create a follow up PR.

[calixtus]

Should be a followup PR. Since we want to release tonight, I would like to ask you to create a new issue from your comment and we merge this one now.

[HoussemNasri]

@DohaRamadan Please comment on #10269 so I can assign you.