fix: add comment in gst return log for backdated transactions

[Sanket322]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 60.86957% with 9 lines in your changes missing coverage. Please review.

Project coverage is 61.31%. Comparing base (4bb9af2) to head (c1fb3c4).

Files with missing lines	Patch %	Lines
...ndia_compliance/gst_india/overrides/transaction.py	52.63%	9 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2656      +/-   ##
===========================================
- Coverage    61.33%   61.31%   -0.03%     
===========================================
  Files          119      119              
  Lines        11505    11521      +16     
===========================================
+ Hits          7057     7064       +7     
- Misses        4448     4457       +9     

Files with missing lines	Coverage Δ
...ia_compliance/gst_india/overrides/payment_entry.py	66.86% <100.00%> (+0.19%)	⬆️
...ia_compliance/gst_india/overrides/sales_invoice.py	81.61% <100.00%> (ø)
...ndia_compliance/gst_india/overrides/transaction.py	88.10% <52.63%> (-0.99%)	⬇️

... and 2 files with indirect coverage changes