New wallet on mobile app importing transactions from other wallets after switching between wallets

[MBMaria]

Overview

After creating a new wallet on the Mobile App, if you switch to a different wallet that has a balance and transaction history, once switching back to the fresh wallet, it will bring across a small balance, which will go down to zero after a couple seconds, and will also bring across and keep previous transaction history. If you do a transaction in the new wallet, then disconnect and reconnect, the old transactions will disappear and only the relevant one(s) to the new wallet will remain. Release: https://github.com/shapeshift/web/pull/2837

References and additional details

1. Open Mobile App and create new wallet
2. Notice on initial load there is a zero balance and no transaction history
3. Switch to a wallet that has a balance and recent transactions
4. Switch back to the new wallet and notice a small balance (which will decrease to 0) and transaction history.
5. Complete a transaction in the new wallet
6. Disconnect wallet and reconnect
7. Notice the correct balance and correct transaction history.

Acceptance Criteria

New wallet should not have balance or tx history from other wallets after switch between wallets.

Need By Date

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Screenshots/Mockups

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Ownership

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Estimated effort

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Sponsor / Stakeholder

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