Persist TX chaining through restarts

[jfldde]

Description

• Update get_prev_utxo to fetch from unsafe confirmed TXs on top of mempool TXs in order to persist chain through restarts.
• Add E2E test which test TX chaining through sequencer restart

Linked Issues

• Fixes Transaction chaining should persist through restarts #1362

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.2%. Comparing base (978ca6f) to head (77ece94).
Report is 2 commits behind head on nightly.

Additional details and impacted files

Files with missing lines	Coverage Δ
crates/bitcoin-da/src/service.rs	51.0% <100.0%> (+0.3%)	⬆️

... and 3 files with indirect coverage changes