Btc scanner e2e

[Lazar955]

Verify that the BTC scanner can correctly output the canonical chain in the expected sequence after bootstrapping, block processing, and reorgs. Implement tests for the following scenarios:

Bootstrapping -> Block handler: Ensure the scanner processes blocks correctly and outputs the canonical chain.
Block handler -> Reorg happens -> Bootstrapping -> Block handler: Simulate a reorg and verify the scanner can recover and output the correct chain.