fix(ims): also fetch original_bill_date and original_bill_no fields in Inward Supply (backport #3800)

[mergify]

Fixes: https://support.frappe.io/helpdesk/tickets/53643

Summary by CodeRabbit

• New Features
  • Added capture of original bill date and original bill number in the GST Invoice Management System, allowing users to record and track additional invoice reference details for inward supplies.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

---

This is an automatic backport of pull request #3800 done by [Mergify](https://mergify.com).

[coderabbitai]

Important

Review skipped

Bot user detected.

To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.89%. Comparing base (4bbfceb) to head (224586c).
⚠️ Report is 19 commits behind head on version-15-hotfix.

Additional details and impacted files

@@                Coverage Diff                 @@
##           version-15-hotfix    #3802   +/-   ##
==================================================
  Coverage              59.89%   59.89%           
==================================================
  Files                    140      140           
  Lines                  14795    14795           
==================================================
+ Hits                    8861     8862    +1     
+ Misses                  5934     5933    -1     

Files with missing lines	Coverage Δ
.../doctype/gst_invoice_management_system/__init__.py	98.95% <ø> (ø)

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[india-compliance-bot]

🎉 This PR is included in version 15.24.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀