deps: upgrade to Flutter 3.16.0 (breaking changes)

integration_test/utility/tests_utility.dart

lib/main.dart

lib/providers/substrate_sdk.dart

lib/providers/wallets_profiles.dart

lib/screens/activity.dart

lib/screens/myWallets/change_pin.dart

lib/screens/myWallets/import_g1_v1.dart

lib/screens/myWallets/manage_membership.dart

lib/screens/myWallets/migrate_identity.dart

lib/screens/myWallets/restore_chest.dart

lib/screens/myWallets/unlocking_wallet.dart

lib/screens/myWallets/wallet_options.dart

lib/screens/myWallets/wallets_home.dart

lib/screens/onBoarding/10.dart

lib/screens/onBoarding/11_congratulations.dart

lib/screens/onBoarding/6.dart

lib/screens/search.dart

lib/screens/transaction_in_progress.dart

lib/screens/wallet_view.dart

lib/widgets/certifications.dart