fix: properly pass rejection statuses

[meeh0w]

Changes

1. Attempts to recognize instances of user rejecting the transaction on the hardware wallet as opposed to the device failing to sign it.
2. Fixes an issue where Ledger device must be connected and unlocked before onboarding/importing the wallet.

Testing

1. Initiate any transaction (e.g. Send) and reject it on the device (Ledger or Keystone). You should NOT see the error toast.

   • Also do the same from Core Web, but in this case Core Web should not prompt you again after you declined it once.

2. Go to Ledger import/onboarding with the device disconnected. You should be able to finish onboarding once you connect it (without the fix, you'd have to refresh the page)

Checklist for the author

• I've covered new/modified business logic with Jest test cases.
• I've tested the changes myself before sending it to code review and QA.