fix: validation considers moving average by default instead of set va… (backport #52246)

[mergify]

Reference support ticket

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This is an automatic backport of pull request #52246 done by Mergify.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.27%. Comparing base (55129e6) to head (9997185).
⚠️ Report is 66 commits behind head on version-16-hotfix.

Additional details and impacted files

@@                Coverage Diff                 @@
##           version-16-hotfix   #52311   +/-   ##
==================================================
  Coverage              79.26%   79.27%           
==================================================
  Files                   1179     1179           
  Lines                 122451   122446    -5     
==================================================
- Hits                   97064    97063    -1     
+ Misses                 25387    25383    -4     

Files with missing lines	Coverage Δ
erpnext/controllers/selling_controller.py	84.15% <100.00%> (+0.32%)	⬆️
.../stock/doctype/delivery_note/test_delivery_note.py	99.91% <100.00%> (+<0.01%)	⬆️

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[frappe-pr-bot]

🎉 This PR is included in version 16.4.0 🎉

The release is available on GitHub release

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