transformers

1ae5aaae - chore(ci): remove dead env vars from circleci-failure-summary-comment.yml (#45972)

chore(ci): remove dead env vars from circleci-failure-summary-comment.yml (#45972) `TARGET_BRANCH` and `TARGET_SHA` were declared at the job level but never referenced by any subsequent step. `PR_NUMBER` was also declared at the job level but every step that needs it re-declares its own step-local `PR_NUMBER: ${{ github.event.pull_request.number }}` env, so the job-level binding was equally unused. Drop the entire job-level `env:` block. No behavior change.