[BUGFIX] fixed bug in content-filter-radio event listener

- fixed bug when adding new row and selecting radio button

__Tasks:__

- [x] gather feedback for my changes


__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | none
| Fixed tickets | https://github.com/massiveart/POOL-ALPIN/issues/86
| Doc           | none