Fix: Issue #1140

[Prathamj07]

Summary

Fixes #1140

Deduplicate failed collection reports by nodeid instead of longrepr. Pytest's longrepr classes are eq=False dataclasses, so the same collection error from different workers never compared equal and pytest_collectreport fired once per worker under -n.

Checklist

• Make sure to include reasonable tests for your change if necessary

• We use towncrier for changelog management, so please add a news file into the changelog folder following these guidelines:

  • Name it $issue_id.$type for example 1140.bugfix;
  • If you don't have an issue_id change it to the PR id after creating it
  • Ensure type is one of removal, feature, bugfix, vendor, doc or trivial