[Improvement] Migrate Admin Translation CSV Export to use League CSV

[jcPimcore]

User Story

As Studio UI admin translation CSV export I want to use League/CSV to migrate current line break handling.

Acceptance Criteria

• Migration to League/CSV is evaluated and decided
• Translation\Service\CsvService::removeLineBreaks() is migrate to use League/CSV instead of string replacements
• CSV export still working generally
• CSV export with line break values do work with migrated code

See https://pimcore.atlassian.net/browse/PEES-945

[github-actions]

Thanks a lot for reporting the issue. We did not consider the issue as "Pimcore:Priority", "Pimcore:ToDo" or "Pimcore:Backlog", so we're not going to work on that anytime soon. Please create a pull request to fix the issue if this is a bug report. We'll then review it as quickly as possible. If you're interested in contributing a feature, please contact us first here before creating a pull request. We'll then decide whether we'd accept it or not. Thanks for your understanding.