[build-tools] Support absolute artifact glob paths

[sjchmiela]

See https://app.datadoghq.com/logs?query=findArtifacts&agg_m=count&agg_m_source=base&agg_q=status%2Cservice&agg_q_source=base%2Cbase&agg_t=count&clustering_pattern_field_path=message&cols=host%2Cservice&messageDisplay=inline&refresh_mode=sliding&sort_m=%2C&sort_m_source=%2C&sort_t=%2C&storage=hot&stream_sort=desc&top_n=10%2C10&top_o=top%2Ctop&viz=pattern&x_missing=true%2Ctrue&from_ts=1779570516711&to_ts=1779743316711&live=true

---

Summary

• applies the validated absolute-glob artifact lookup behavior directly
• keeps existing exact absolute path handling intact
• adds unit coverage for absolute glob artifact patterns

Why

The dry-run Sentry instrumentation validated that absolute artifact glob support is the intended behavior. This PR removes the dry-run path and uses the supported lookup logic directly.

Validation

• yarn oxfmt packages/build-tools/src/utils/artifacts.ts packages/build-tools/src/utils/tests/artifacts.test.ts
• yarn --cwd packages/build-tools test --runTestsByPath src/utils/tests/artifacts.test.ts

[ghost]

Subscribed to pull request

File Patterns	Mentions
**/*	@douglowder

Generated by CodeMention

[ghost]

⏩ The changelog entry check has been skipped since the "no changelog" label is present.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 57.20%. Comparing base (2fc5f20) to head (6e8a60f).

Files with missing lines	Patch %	Lines
packages/build-tools/src/utils/artifacts.ts	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3788      +/-   ##
==========================================
- Coverage   57.22%   57.20%   -0.02%     
==========================================
  Files         905      905              
  Lines       39302    39276      -26     
  Branches     8237     8229       -8     
==========================================
- Hits        22488    22463      -25     
+ Misses      15344    15343       -1     
  Partials     1470     1470              

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