Fix wallet HD mode persistence and migration bugs

[CharlVS]

Persist wallet HD mode after sign-in and fix incorrect mode application during legacy wallet migration.

Previously, the login flow would incorrectly force iguana mode during legacy wallet migration if the user was not yet loaded from the SDK. Additionally, the selected wallet type was not persisted after a successful sign-in, causing HD mode changes to be lost across sessions.

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[cursor]

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
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[CharlVS]

@cursor how can this be tested?

[cursor]

I enhanced the user experience for wallet import by providing more specific mnemonic validation errors. Additionally, I refactored the CoinAddressesBloc to be more resilient during address generation and pubkey watching, and refined the withdrawal form's memo field display logic.

• Improved mnemonic validation error messages:
  • I added new translation keys (mnemonicInvalidWordError, mnemonicInvalidChecksumError, mnemonicInvalidLengthError) to assets/translations/en.json and lib/generated/codegen_loader.g.dart.
  • I updated the _validateSeed method in lib/views/wallets_manager/widgets/wallet_simple_import.dart to leverage these new, specific error messages from the SDK's MnemonicFailedReason enum, providing clearer feedback to users during wallet import.
• Enhanced CoinAddressesBloc robustness and type safety:
  • I updated the import of AssetPubkeys in lib/bloc/coin_addresses/bloc/coin_addresses_bloc.dart and refined the _pubkeysSub type to StreamSubscription<AssetPubkeys>.
  • I refactored _onCreateAddressSubmitted to use sdk.pubkeys.watchCreateNewPubkey with a try-catch block for better error handling during address creation, and added a non-fatal error handling for analytics parsing.
  • I made _startWatchingPubkeys asynchronous, ensuring proper cancellation and precaching of pubkeys, and added isClosed checks to prevent state updates on a closed bloc.
  • I ensured CoinAddressesPubkeysSubscriptionFailed correctly sets the bloc's status to FormStatus.failure.
• Refined withdrawal form memo field display:
  • I removed the standalone MemoField widget from lib/views/wallet/coin_details/withdraw_form/widgets/fill_form/fields/fields.dart.
  • I integrated the memo field logic directly into lib/views/wallet/coin_details/withdraw_form/withdraw_form.dart as WithdrawMemoField, making it conditionally visible only for TendermintProtocol or ZhtlcProtocol assets.
• Minor UI formatting and dependency updates:
  • I applied minor formatting adjustments to onChanged callbacks in lib/views/wallet/coin_details/withdraw_form/widgets/fill_form/fields/fields.dart for improved readability.
  • I updated various package dependencies in pubspec.lock and packages/komodo_ui_kit/pubspec.lock, including komodo-defi-sdk-flutter to a newer commit.

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