Handle seed phrase error when account is created

Overview

Users sometimes encounter an error when creating an account with a seed phrase via linkdrop, even though the transaction is succeeding. We should only show the user an error at this step if it is the actual account creation transaction that is failing, otherwise they will be mislead into thinking their account wasn’t successfully created.

A simple solution is to retry the TX after the linkdrop claim TX, as this should eventually succeed. If it doesn’t after ~5 retries, we should check if the account has been created, and if it has, log the user in.

https://github.com/near/near-wallet/pull/905#issuecomment-692793925

Acceptance Criteria

When creating an account using linkdrop

• At the /verify step, users only encounter an error if the linkdrop claim step is failing
• If the second “addKey” TX fails, the TX is retried
• If the account is created successfully, the user is redirected to the /profile page

[vgrichina]

@kcole16 @marcinbodnar I think we have to test with artificially introduced errors, e.g. like here https://github.com/near/near-wallet/pull/892

[marcinbodnar]

@kcole16 PR not merge yet, I linked this issue to PR