Merge bitcoindevkit/bdk#1310: Remove extra taproot fields when finalizing PSBT

5840ce473e430de4c4e3698734e9667cc476fee4 fix(bdk): Remove extra taproot fields when finalizing Psbt (vmammal)
8c78a42163dee06b640f46d74255df37dbc53873 test(psbt): Fixup test_psbt_multiple_internalkey_signers (vmammal)

Pull request description:

  We currently allow removing `partial_sigs` from a finalized PSBT, which is relevant to non-taproot inputs, however taproot related PSBT fields were left in place despite the recommendation of BIP371 to remove them once the `final_script_witness` is constructed. This can cause confusion for parsers that encounter extra taproot metadata in an already satisfied input.

  Fix this by introducing a new member to SignOptions `remove_taproot_extras`, which when true will remove extra taproot related data from a PSBT upon successful finalization. This change makes removal of all taproot extras the default but configurable.

  fixes #1243

  ### Notes to the reviewers

  If there's a better or more descriptive name for `remove_taproot_extras`, I'm open to changing it.

  ### Changelog notice

  Fixed an [issue](https://github.com/bitcoindevkit/bdk/issues/1243) finalizing taproot inputs following BIP371

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

  #### Bugfixes:

  <!-- * [ ] This pull request breaks the existing API -->
  * [x] I've added tests to reproduce the issue which are now passing
  * [x] I'm linking the issue being fixed by this PR

ACKs for top commit:
  evanlinjin:
    ACK 5840ce473e430de4c4e3698734e9667cc476fee4

Tree-SHA512: 69f022c6f736500590e36880dd2c845321464f89af6a2c67987d1c520f70a298328363cade0f55f270c4e7169e740bd4ada752ec2c75afa02b6a5a851f9030c3

diff --cc crates/bdk/src/wallet/mod.rs
Simple merge

diff --cc crates/bdk/tests/psbt.rs
Simple merge

diff --cc crates/bdk/tests/wallet.rs
Simple merge