fix(l10n): clear corrupted fa translation entries breaking compilemessages

[miaulalala]

Summary

• CI (test (postgres) / test (sqlite)) has been failing on master since the automated Transifex sync commit 8c9115fe98 — make dev-setup → make l10n → django-admin compilemessages aborts with msgfmt: found 4 fatal errors before any test runs.
• Root cause: three corrupted entries in locale/fa/LC_MESSAGES/django.po, not an encoding or RTL issue — the Farsi text itself is valid UTF-8 and other entries in the file compile fine:
  • locale/fa/LC_MESSAGES/django.po:769 — msgid/msgstr disagree on trailing \n
  • locale/fa/LC_MESSAGES/django.po:776 — msgstr is missing the %(site_domain)s format placeholder present in msgid
  • locale/fa/LC_MESSAGES/django.po:1766 — msgid/msgstr disagree on leading \n
• These look like partial/truncated translations that landed via the Transifex sync bot. Rather than fabricate corrected Farsi text, this clears the three broken msgstr entries so they fall back to the English msgid (valid, untranslated gettext entries) until Transifex resupplies clean translations on its next sync.
• Swept every other locale/*/LC_MESSAGES/django.po file with msgfmt -c — no other locale has this issue.

Test plan

• msgfmt -c -v -o /dev/null locale/fa/LC_MESSAGES/django.po — 0 fatal errors (previously 4)
• python manage.py compilemessages --settings nextcloudappstore.settings.development — completes without error across all locales
• for f in locale/*/LC_MESSAGES/django.po; do msgfmt -c -o /dev/null "$f"; done — no fatal errors in any locale

🤖 Generated with Claude Code

[miaulalala]

@rakekniven could you check on your end is you have time?

[marcelklehr]

🐘

[rakekniven]

Translation takes place at Transifex.
So changes to source by this PR get overriden by next sync tomorrow morning.

From my understanding this PR does not help.

I had a look at the translations at Tx for persian (fa) and adapted 50 strings. Found named strings marked with error and removed translations seconds ago.
Should be fine tomorrow after next sync.

[miaulalala]

Translation takes place at Transifex. So changes to source by this PR get overriden by next sync tomorrow morning.

From my understanding this PR does not help.

I had a look at the translations at Tx for persian (fa) and adapted 50 strings. Found named strings marked with error and removed translations seconds ago. Should be fine tomorrow after next sync.

Let's get CI green - if it's synced tomorrow it should be fine to have no translations for today