[Backup] Backup warning on home should lead to backup flow instead of settings

[yshwanth]

App version: https://github.com/SatoshiPortal/bullbitcoin-mobile/commit/246e85cb54c88dbb60c011f8d43850e728afd78d

Description: When backing up, the page shows Instant Payments Wallet Setting. It should say Default Seed or Base seed page.

Note: After backup, it would be better if it automatically pops back to the Homepage