fix(transfer): activity for transfer to savings boosts

[pwltr]

Description

Fixes activity for boosted transfers to savings.

Linked Issues/Tasks

https://github.com/synonymdev/bitkit/pull/2128#issuecomment-2505676160

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (improving code without creating new functionality)

Tests

• Detox test
• Unit test
• No test

QA Notes

I tested onchain send/receive, transfers and boosts before and after restore.

• Receive (pending)
• Receive (confirmed)
• Receive (pending + boosted)
• Receive (confirmed + boosted)
• Send (pending)
• Send (confirmed)
• Send (pending + boosted)
• Send (confirmed + boosted)
• Transfer from Savings (pending)
• Transfer from Savings (confirmed)
• Transfer from Savings (pending + boosted)
• Transfer from Savings (confirmed + boosted)
• Transfer from Spending (pending)
• Transfer from Spending (pending + boosted)
• Transfer from Spending (confirmed)
• Transfer from Spending (confirmed + boosted)