refactor: Consolidate duplicate zero-quantity Items checks for transactions.

[bosue]

Still necessary preparation for properly implementing a zero-quantity allowance for On-Demand items with a yet to be determined quantity, as per #36012 and #36024 (comment).

Restart of #37865 following #38252. Reuses InvalidQtyError introduced there.

Fixes #37683.
Adds/expands/refines testcases for every single transaction doctype affected.
Also removes duplication.

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (64266c4) 60.16% compared to head (3688d94) 60.16%.
Report is 165 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #38530   +/-   ##
========================================
  Coverage    60.16%   60.16%           
========================================
  Files          759      759           
  Lines        69464    69458    -6     
========================================
- Hits         41794    41792    -2     
+ Misses       27670    27666    -4     

Files	Coverage Δ
...xt/accounts/doctype/payment_entry/payment_entry.py	84.25% <100.00%> (ø)
...ounts/doctype/purchase_invoice/purchase_invoice.py	70.12% <ø> (ø)
...xt/accounts/doctype/sales_invoice/sales_invoice.py	74.00% <ø> (ø)
...ype/request_for_quotation/request_for_quotation.py	50.19% <100.00%> (+0.59%)	⬆️
...g/doctype/supplier_quotation/supplier_quotation.py	40.39% <ø> (ø)
erpnext/buying/utils.py	81.03% <ø> (+0.38%)	⬆️
erpnext/controllers/accounts_controller.py	85.06% <100.00%> (ø)
erpnext/controllers/buying_controller.py	83.94% <ø> (ø)
erpnext/controllers/sales_and_purchase_return.py	87.22% <ø> (ø)
erpnext/controllers/selling_controller.py	80.11% <ø> (+0.17%)	⬆️
... and 10 more

[stale]

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