Revert "ci: skip Real Vuforia on pull requests" (#3484)

[adamtheturtle]

Reverts #3484 (merge commit af8bee5).

Restores the previous .github/workflows/test.yml behaviour:

• Real Vuforia backends run on pull_request again (no conditional --skip-real).
• The coverage gate is a hard 100% on every event (no report.fail_under rewrite on PRs).

🤖 Generated with Claude Code

https://claude.ai/code/session_018x8C5AEJPVyoGeQESTtMRq

[adamtheturtle]

This revert brings back Real Vuforia on PRs, which currently fails with ProjectSuspendedError on a stable set of matrix cells (same SECRET_INDEX each run — e.g. secrets for TestIncludeTargetData / test_model_target_web_api).

Until those Vuforia projects are replaced/unsuspended in ci_secrets, PR Test cannot go green with Real backends enabled. #3484’s skip-real-on-PR path is what lets Dependabot land.

Happy to help once credentials are refreshed, or to explore a narrower approach (denylist of suspended secret slots) if preferred over skipping Real on PRs.