Impacted files:
* `fetched_product.dart`: simplified the code with just the notion of "is connected?"
* `GeneratedPluginRegistrant.swift`: wtf
* `product_refresher.dart`: upgraded to `connectivity_plus` v6.0.3 - in our case we eventually just want to check `ConnectivityResult.none`
* `pubspec.lock`: wtf
* `pubspec.yaml`: upgraded to `connectivity_plus` v6.0.3
* feat: 4423 - specific "Not connected to internet" displayed error
Impacted files:
* `barcode_product_query.dart`: removed useless `try` as already `catch`'ed
* `continuous_scan_model.dart`: removed the `codeInvalid` case that could never happen
* `fetched_product.dart`: refactored with explicit constructors and additional exception and connectivity fields; removed the `codeInvalid` case that could never happen
* `new_product_page.dart`: minor refactoring
* `product_dialog_helper.dart`: removed the `codeInvalid` case that could never happen; minor refactoting
* `product_list_item_simple.dart`: removed the `codeInvalid` case that could never happen
* `product_loader_page.dart`: removed useless `try` as already `catch`'ed
* `product_refresher.dart`: added a specific "You're not connected to the internet" error message; refactored using more `FetchedProduct`; removed useless method
* `pubspec.lock`: wtf
* `pubspec.yaml`: added package `connectivity_plus`
* `question_card.dart`: refactored using `FetchedProduct`
* feat: 4423 - fixed pubspec.yaml
* feat: 4423 - new "server down" message after a ping attempt
Impacted files:
* `fetched_product.dart`: added field `failedPingedHost` where we store the host that we couldn't ping
* `generated_plugin_registrant.cc`: wtf
* `generated_plugins.cmake`: wtf
* `GeneratedPluginRegistrant.swift`: wtf
* `main.dart`: registered `DartPingIOS`
* `product_refresher.dart`: now trying to ping the server if exception and connection
* `pubspec.lock`: wtf
* `pubspec.yaml: added packages `dart_ping` and `dart_ping_ios`
* feat: 4423 - stupid lint check part 1
* feat: 4423 - stupid lint check part 2
* feat: 4423 - stupid lint check part 3
* feat: 4423 - stupid lint check part 5
* feat: 4423 - localizations
Impacted files:
* `app_en.arb`: 4 new labels when we couldn't retrieve a product (not found, no internet, server down, server error)
* `product_refresher.dart`: used the new labels
Impacted files:
* `account_deletion_webview.dart`: minor refactoring; could not test, unfortunately
* `background_task_badge.dart`: minor refactoring
* `camera_scan_page.dart`: minor refactoring
* `country_selector.dart`: minor refactoring
* `generated_plugin_registrant.cc`: wtf
* `generated_plugins.cmake`: wtf
* `GeneratedPluginRegistrant.swift`: wtf
* `Info.plist`: wtf
* `knowledge_panel_world_map_card.dart`: minor refactoring
* `network_config.dart`: minor refactoring
* `Podfile.lock`: wtf
* `product_query_page.dart`: minor refactoring
* `project.pbxproj`: wtf
* `pubspec.lock`: wtf
* `apple_app_store/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `google_play/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `app_store/shared/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `uri_store/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `data_importer/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `data_importer_shared/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `mlkit/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `scanner/shared/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `zxing/pubspec.yaml`: to dart 2.19 without restriction for flutter
* `smooth_app/pubspec.yaml`: to dart 2.19 without restriction for flutter; upgraded the versions
* `user_preferences_page_test.dart`: minor cheat - we need either to refactor with `launchUrl` or to fix `WebView`
