test: avoid closing connection in tests

fix: auto add modified index when sort_field is set to it by ankush [frappe] PR#25686

From: https://github.com/frappe/frappe/pull/25686
Date: 2024-03-27 20:10:26+05:30

• fix: auto add modified index when sort_field is set to it (#25686)

---

Checkout instructions

# Checkout locally
git fetch upstream
git switch ft-pr-25686

# Alternatively, re-take the changes
git switch develop
ft take ft-pr-25686

# Make changes then rebase
git rebase -i develop

# Fix or ignore conflicts
git checkout --theirs .
git rebase --continue

# Force-push changes
git push --force-with-lease