- It's possible that the description of an `Regularlink` is `Text` and not
another `Regularlink`. Therefor if it's `Text`, convert it to an
`Regularlink` trough the 'old' behavior (pass it trough `org.String` and
trim `file:` prefix).
- Adds unit tests.
- Resolves https://codeberg.org/Codeberg/Community/issues/1430
(cherry picked from commit 385fc6ee6be25859066a716aa15be09991e2d33c)