fix: Stop tx processing if failed to delete expired credentials (#6715)

[oleks-rip]

High Level Overview of Change

Return error code if deleting expired credentials failed

Ports #6715, which is based on 3.1.x, to develop.

[codecov]

Codecov Report

❌ Patch coverage is 88.46154% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.6%. Comparing base (653a383) to head (9615e3d).

Files with missing lines	Patch %	Lines
src/libxrpl/tx/Transactor.cpp	25.0%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #6962     +/-   ##
=========================================
- Coverage     81.6%   81.6%   -0.0%     
=========================================
  Files         1010    1010             
  Lines        75992   76004     +12     
  Branches      7601    7606      +5     
=========================================
+ Hits         62013   62015      +2     
- Misses       13979   13989     +10     

Files with missing lines	Coverage Δ
include/xrpl/basics/Buffer.h	100.0% <ø> (ø)
include/xrpl/core/JobTypes.h	98.8% <ø> (ø)
src/libxrpl/ledger/helpers/CredentialHelpers.cpp	98.3% <100.0%> (+0.7%)	⬆️
.../libxrpl/ledger/helpers/PermissionedDEXHelpers.cpp	95.7% <100.0%> (ø)
...pl/tx/transactors/credentials/CredentialAccept.cpp	100.0% <100.0%> (ø)
...pl/tx/transactors/credentials/CredentialDelete.cpp	100.0% <100.0%> (ø)
...xrpld/rpc/handlers/orderbook/DepositAuthorized.cpp	100.0% <100.0%> (ø)
src/libxrpl/tx/Transactor.cpp	91.7% <25.0%> (-0.6%)	⬇️

... and 6 files with indirect coverage changes

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[github-actions]

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[github-actions]

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