I'm a project liason at translatewiki.net. We've recently added a feature that allows translatewiki to open a pull request (PR).
Currently we submit translations to the twn branch but do not create a PR to the main development branch.
We would like to change the configuration for Wikipedia iOS on our end, to enable this feature. This will help bring visibility to the submitted translations, and trigger any CI processes, if present. If a PR is already open, the existing PR will be re-used rather than creating a a new PR. This is similar to what's happening with the GitHub action here: https://github.com/wikimedia/wikipedia-ios/blob/main/.github/workflows/localization.yml
This will not require any code changes on your end, but you will have to review, approve and merge the PRs.