fix missing batch header partial files

[jasonbornsteinMOOV]

Workaround for incorrectly created partial files, where entries exist without a BatchHeader record.

Changes

Pass a new parameter AllowMissingBatchHeader: true to ach.ValidateOpts when using ach.NewReader to read an ACH file.

Why Are Changes Being Made

Workaround the issue where partial files (full batches with no file header/control record) are being created without batch headers.

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (15b9eb4) 47.05% compared to head (db0906f) 47.08%.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #204      +/-   ##
==========================================
+ Coverage   47.05%   47.08%   +0.02%     
==========================================
  Files          87       87              
  Lines        3817     3819       +2     
==========================================
+ Hits         1796     1798       +2     
  Misses       1705     1705              
  Partials      316      316              

Files	Coverage Δ
internal/incoming/odfi/processor.go	71.95% <100.00%> (+0.34%)	⬆️
internal/service/model_inbound.go	31.25% <ø> (ø)
internal/incoming/odfi/scheduler.go	31.76% <92.30%> (+0.81%)	⬆️

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.