feat: add `TransactionStatusChanged` event and emit wallet events#552

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xdustinface wants to merge 3 commits intov0.42-devfrom

feat/transaction-status-events

Commits on Mar 20, 2026

feat: add `TransactionStatusChanged` event and emit wallet events
xdustinface
committed
fix: use `.expect()` on `try_lock()` in `MockWallet::process_instant_send_lock`
xdustinface
committed
fix: deduplicate InstantSend events across mixed entry points
xdustinface
committed