fix: Check credential for LoanBrokerCoverWithdraw and VaultWithdraw

[shawnxie999]

High Level Overview of Change

Context of Change

VaultWithdraw and LoanBrokerCoverWithdraw did not accept sfCredentialIDs, so withdrawals to a destination with lsfDepositAuth and credential-only preauth failed with tecNO_PERMISSION even when the sender held valid credentials.

Fix

Add sfCredentialIDs to both transaction formats and wire up credential validation, following the pattern used by Payment. Gated by fixCleanup3_2_0 (with featureCredentials for the field).

Spec update: XRPLF/XRPL-Standards#538

API Impact

• Public API: New feature (new methods and/or new fields)
• Public API: Breaking change (in general, breaking changes should only impact the next api_version)
• libxrpl change (any change that may affect libxrpl or dependents of libxrpl)
• Peer protocol change (must be backward compatible or bump the peer protocol version)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.4%. Comparing base (a389f92) to head (3fe5d43).
⚠️ Report is 83 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #7107     +/-   ##
=========================================
- Coverage     82.4%   82.4%   -0.0%     
=========================================
  Files         1011    1011             
  Lines        76913   76952     +39     
  Branches      8962    8964      +2     
=========================================
+ Hits         63348   63375     +27     
- Misses       13556   13568     +12     
  Partials         9       9             

Files with missing lines	Coverage Δ
include/xrpl/ledger/View.h	100.0% <ø> (ø)
include/xrpl/protocol/detail/transactions.macro	100.0% <ø> (ø)
...col_autogen/transactions/LoanBrokerCoverWithdraw.h	100.0% <100.0%> (ø)
...xrpl/protocol_autogen/transactions/VaultWithdraw.h	100.0% <100.0%> (ø)
include/xrpl/tx/transactors/vault/VaultWithdraw.h	100.0% <ø> (ø)
src/libxrpl/ledger/View.cpp	97.4% <100.0%> (+0.6%)	⬆️
...tx/transactors/lending/LoanBrokerCoverWithdraw.cpp	97.0% <100.0%> (+0.2%)	⬆️
src/libxrpl/tx/transactors/vault/VaultWithdraw.cpp	91.3% <100.0%> (+0.5%)	⬆️

... and 6 files with indirect coverage changes

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