fix: reset entries qty to 1 for serial item

[s-aga-r]

Issue: There is a 1:1 mapping between Serial No and Serial and Batch Entry, the system should validate the same.

Steps to Replicate:

• Create a Serial and Batch Bundle for Serial Item, select Serial No and set the Qty > 1.
• Create a Delivery Note, select that bundle and check the Stock Ledger after submitting.

Serial and Batch Bundle

Delivery Note

Stock Ledger Entry

Changes:

• Reset the Qty to 1 and make the field read-only for serial item
• Set child table row warehouse as parent warehouse

[codecov]

Codecov Report

Merging #35618 (b5c5a90) into develop (992d61b) will decrease coverage by 0.01%.
The diff coverage is 88.88%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #35618      +/-   ##
===========================================
- Coverage    63.92%   63.92%   -0.01%     
===========================================
  Files          812      812              
  Lines        61785    61780       -5     
===========================================
- Hits         39499    39495       -4     
+ Misses       22286    22285       -1     

Impacted Files	Coverage Δ
erpnext/projects/doctype/task/task.py	65.19% <0.00%> (-0.29%)	⬇️
erpnext/accounts/party.py	77.56% <100.00%> (+0.17%)	⬆️
...serial_and_batch_bundle/serial_and_batch_bundle.py	70.23% <100.00%> (ø)