fix(i18n): add missing translation key for molecule destroy cleanup

Add 'Cleaning up: running molecule destroy for {scenario}' to
translations.json with proper translations for all 6 languages
(bg, de, en, pl, ru, zh). This key was introduced in d8919ae but
the translation entry was missing, causing CI lint to fail.

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

src/devx/translations.json

@@ -3822,5 +3822,13 @@
     "pl": "importlib.reload({mod}) called {n} time(s) in test '{test}' — odd count leaves module in modified state. Add a final reload to restore defaults or wrap in try/finally.",
     "ru": "importlib.reload({mod}) called {n} time(s) in test '{test}' — odd count leaves module in modified state. Add a final reload to restore defaults or wrap in try/finally.",
     "zh": "importlib.reload({mod}) called {n} time(s) in test '{test}' — odd count leaves module in modified state. Add a final reload to restore defaults or wrap in try/finally."
+  },
+  "Cleaning up: running molecule destroy for {scenario}": {
+    "bg": "Почистване: изпълнение на molecule destroy за {scenario}",
+    "de": "Aufräumen: molecule destroy wird ausgeführt für {scenario}",
+    "en": "Cleaning up: running molecule destroy for {scenario}",
+    "pl": "Czyszczenie: uruchamianie molecule destroy dla {scenario}",
+    "ru": "Очистка: запуск molecule destroy для {scenario}",
+    "zh": "清理: 正在为 {scenario} 运行 molecule destroy"
   }
 }