What is the purpose of this pull request?

• Bug fix
• Documentation update
• New feature
• Test
• Other: Updated logic to get new hash based on height and logic to handle both peers lying. From Functional tests for floresta-wire/chain_selector  #180

Which crates are being modified?

• floresta-chain
• floresta-cli
• floresta-common
• floresta-compact-filters
• floresta-electrum
• floresta-watch-only
• floresta-wire
• floresta
• florestad
• Other:

Description

The method as is does not update the hash, so this pr modifies to update it and also adds a check for both peers lying.

Notes to the reviewers

I opted for using the "?" instead of unwrap, following the discussion on #463

Author Checklist

• I've followed the contribution guidelines
• I've verified one of the following:
  • Ran just pcc (recommended but slower) I did this one
  • Ran just lint-features '-- -D warnings' && cargo test --release
  • Confirmed CI passed on my fork
• I've linked any related issue(s) in the sections above

Finally, you are encouraged to sign all your commits (it proves authorship and guards against tampering—see How (and why) to sign Git commits and GitHub's guide to signing commits).