fix: translation fixes, missing keys, typo corrections (#275)

- Added missing 'ok' key to en, fr, es, ko translations
- Added missing French siteRecovery/plugins translation block
- Added missing Portuguese siteRecoveryDesc + enablePluginsHint
- Fixed "Military Grade encryption" → "AES-256-GCM" in migration endpoint
- Fixed "definetly" → "definitely" typo in constants.js

Credit: @newtscamander2

Author: MrMasterbay

pegaprox/api/settings.py

@@ -189,7 +189,7 @@ def migrate_all_encryption():
     return jsonify({
         'success': True,
         'results': results,
-        'message': f"Migrated {results['clusters_migrated']} clusters to Military Grade encryption"
+        'message': f"Migrated {results['clusters_migrated']} clusters to AES-256-GCM"
     })