i18n(metadata): translate the fetch summary 'Drive Offline' stat

Reuses each locale's established rootOffline rendering from the scoped
scan feature (§2 'Scoped scan and root availability').

locales/he.json

@@ -2130,7 +2130,7 @@
             "statSuccess": "הצלחה",
             "statFailed": "נכשל",
             "statSkipped": "דולג",
-            "statOffline": "[TODO: Translate] Drive Offline",
+            "statOffline": "כונן לא זמין",
             "statTotal": "סה\"כ נסרק",
             "statDuration": "משך",
             "successMessage": "כל {count} {type}s עודכנו בהצלחה!",