Test coverage for social media links and image upload

### Terms

- [x] I have searched [open and closed feature requests](https://github.com/activist-org/activist/issues?q=is%3Aissue+label%3Afeature)
- [x] I agree to follow activist's [Code of Conduct](.github/CODE_OF_CONDUCT.md)

### Description

The organization / social links + image upload frontend components need tests (vitest and Playwright).

### Contribution

_No response_