fix: show error message instead of throw during Purchase Invoice name validation (backport #2864)

[mergify]

Issue: Support Ticket - 27223

_{Huly®: IC-2995}

[mergify]

Cherry-pick of a8e5490 has failed:

On branch mergify/bp/version-14/pr-2864
Your branch is up to date with 'origin/version-14'.

You are currently cherry-picking commit a8e54900.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   india_compliance/gst_india/overrides/test_purchase_invoice.py
	modified:   india_compliance/gst_india/overrides/test_sales_invoice.py

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   india_compliance/gst_india/utils/__init__.py

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.03%. Comparing base (8a170a9) to head (98b6c56).
Report is 2 commits behind head on version-14.

Additional details and impacted files

@@              Coverage Diff               @@
##           version-14    #2868      +/-   ##
==============================================
+ Coverage       61.00%   61.03%   +0.02%     
==============================================
  Files             115      115              
  Lines           11154    11161       +7     
==============================================
+ Hits             6805     6812       +7     
  Misses           4349     4349              

Files with missing lines	Coverage Δ
india_compliance/gst_india/utils/__init__.py	75.48% <100.00%> (+0.41%)	⬆️

[india-compliance-bot]

🎉 This PR is included in version 14.30.11 🎉

The release is available on GitHub release

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