fix: Validation for invalid serial nos at POS invoice level

[nemesis189]

Issue:
After auto fetching the serial nos in the POS screen if the serial is modified incorrectly no error will be thrown and the invoice gets submitted. It is thrown only during consolidation.

Fix:
Added validation for checking if the selected serial nos are valid or not.

Steps:

1. Create a serialized item and create a Serial No for that item.
2. In POS Screen add the serialized item, after setting the quantity auto fetch the serial nos
3. Edit one of the serial nos

4. After checkout it will throw a validation now:

   Note: Before the fix it would simply go ahead and submit the invoice and show the bill

[codecov]

Codecov Report

Merging #29447 (60b9e67) into develop (6b37770) will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop   #29447      +/-   ##
===========================================
+ Coverage    58.18%   58.28%   +0.09%     
===========================================
  Files         1096     1096              
  Lines        68765    68778      +13     
===========================================
+ Hits         40012    40086      +74     
+ Misses       28753    28692      -61     

Impacted Files	Coverage Δ
...rpnext/accounts/doctype/pos_invoice/pos_invoice.py	72.75% <100.00%> (+0.94%)	⬆️
...work_order_stock_report/work_order_stock_report.py	50.00% <0.00%> (-50.00%)	⬇️
...tch_item_expiry_status/batch_item_expiry_status.py	69.23% <0.00%> (-25.00%)	⬇️
...wise_balance_history/batch_wise_balance_history.py	68.96% <0.00%> (-24.14%)	⬇️
...ctype/woocommerce_settings/woocommerce_settings.py	80.76% <0.00%> (-3.85%)	⬇️
...eport/item_variant_details/item_variant_details.py	84.33% <0.00%> (-3.62%)	⬇️
...xt/stock/report/stock_analytics/stock_analytics.py	91.08% <0.00%> (-1.99%)	⬇️
...eport/production_analytics/production_analytics.py	69.51% <0.00%> (-1.22%)	⬇️
erpnext/support/doctype/issue/issue.py	64.56% <0.00%> (-0.98%)	⬇️
erpnext/selling/doctype/quotation/quotation.py	49.18% <0.00%> (-0.55%)	⬇️
... and 19 more