Fix for #9068: Fix capitalization after en-dash characters in title

[Victor-Buendia]

Fixes #9068

Title case capitalizes after en-dash in title.

• 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.

[calixtus]

Hi @Victor-Buendia, thanks for your PR, which already looks very good. However, there are some issues I noticed on a first look:

• Please resolve merge conflicts
• please avoid unnecessary changes to linebrakes in comments. Depending whoever works on a file it would otherwise only go back and forth and back and forth. Please undo them.
• we love parameterized tests. However, I believe the changes to the isiimportertest are wrong in this pr as it seems unrelated to the fixes in the title case formatter. Please put the changes to the isiimporter in another PR.

Thanks!