v5.2.4: Submission button will always enable (#1993)

* chore: make upload files button always enable and validate before upload

* chore: submit button will not disable and validate before submit instead

* chore: build static

* chore: linting

* test: update tests

* chore: update translations

* chore: translation

* chore: make sure empty response doesn't get send and update tests

* chore: update translations

* chore: version bump