[Feature]: Add bitcoin reorg integration tests

[djordon]

Feature - Add bitcoin reorg integration tests

1. Description

All of our logic is supposed to be reorg aware. In particular, if there is a reorg on bitcoin, we are supposed to be able to recover pretty seamlessly; picking up the right signer UTXO and re-minting any deposits that have been orphaned due to the reorg. Although we have some tests for this, most of them are not end-to-end tests. This ticket is to add them

1.1 Context & Purpose

We want to add more confidence that things will go smoothly in the event of a bitcoin reorg that affects the signers’ UTXO or a deposit.

2. Technical Details:

Add integration tests that use the invalidateblock and reconsiderblock RPCs on bitcoin core to test end-to-end handling of reorgs.

2.1 Acceptance Criteria:

• We have more end-to-end tests that check that we handle things correctly in the event of a reorg on bitcoin.

3. Related Issues and Pull Requests (optional):

4. Appendix

A great test would also incorporate how we handle the Stacks side of things in addition to the bitcoin side of things. Alas, this would take quite a bit of work to do because of the difficulty of running a stacks node in a regtest environment.