fix: Item Qty in GST Sales Register Beta (backport #2912)

[mergify]

_{Huly®: IC-3039}

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This is an automatic backport of pull request #2912 done by Mergify.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.85%. Comparing base (d844d7f) to head (04d95c3).
Report is 5 commits behind head on version-15-hotfix.

Additional details and impacted files

@@                Coverage Diff                 @@
##           version-15-hotfix    #2925   +/-   ##
==================================================
  Coverage              59.85%   59.85%           
==================================================
  Files                    122      122           
  Lines                  12127    12127           
==================================================
  Hits                    7259     7259           
  Misses                  4868     4868           

Files with missing lines	Coverage Δ
...gst_sales_register_beta/gst_sales_register_beta.py	84.48% <ø> (ø)
...a_compliance/gst_india/utils/gstr_1/gstr_1_data.py	83.20% <ø> (ø)

[india-compliance-bot]

🎉 This PR is included in version 15.14.7 🎉

The release is available on GitHub release

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