:bug: [#4600] Perform reload on language change

[robinmolen]

Closes #4600

Changes

Triggering a page reload after language change, using the new onLanguageChange property on the sdk form object. This PR requires [open-formulieren/open-forms-sdk#715]

Checklist

Check off the items that are completed or not relevant.

• Impact on features

  • [X] Checked copying a form
  • [X] Checked import/export of a form
  • [X] Config checks in the configuration overview admin page
  • [X] Problem detection in the admin email digest is handled

• Release management

  • [X] I have labelled the PR as "needs-backport" accordingly

• I have updated the translations assets (you do NOT need to provide translations)

  • [X] Ran ./bin/makemessages_js.sh
  • [X] Ran ./bin/compilemessages_js.sh

• Commit hygiene

  • [X] Commit messages refer to the relevant Github issue
  • [X] Commit messages explain the "why" of change, not the how

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.56%. Comparing base (3a310db) to head (7d3482b). Report is 8 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #4741 +/- ## ======================================= Coverage 96.56% 96.56% ======================================= Files 746 746 Lines 25185 25185 Branches 3312 3312 ======================================= Hits 24320 24320 Misses 601 601 Partials 264 264 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.