Disable legacy package-reference pipelines on main

[paulmedynski]

Description

Limit the legacy package-reference pipelines so they no longer run:

• For GitHub pull requests targeting main, dev/*, or feat/*.
• From CI push triggers after merges to GitHub main.

Package-reference validation remains enabled for release branches. The existing scheduled runs on GitHub main and ADO internal/main remain enabled, as do CI push triggers for ADO internal/main and release branches.

This is an engineering-process-only change with no product API or runtime behavior changes.

[Copilot]

🟡 Changes recommended

Both pipeline headers still describe triggers that this change disables.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Limits legacy package-reference pipelines while preserving release and scheduled validation.

Changes:

• Restricts PR validation to release/*.
• Removes GitHub main CI push triggers while retaining schedules and ADO triggers.

File summaries

File	Description
eng/pipelines/sqlclient-pr-package-ref-pipeline.yml	Limits PR triggers to release branches.
eng/pipelines/dotnet-sqlclient-ci-package-reference-pipeline.yml	Disables GitHub main push triggers.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 2
• Review effort level: Balanced

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.48%. Comparing base (7054399) to head (933ae77).
⚠️ Report is 25 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4647      +/-   ##
==========================================
- Coverage   65.92%   64.48%   -1.44%     
==========================================
  Files         290      284       -6     
  Lines       44987    67980   +22993     
==========================================
+ Hits        29656    43837   +14181     
- Misses      15331    24143    +8812     

Flag	Coverage Δ
CI-SqlClient	?
PR-SqlClient-Project	64.48% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.