fix: cleanup process tags code

[tlhunter]

What does this PR do?

• addresses nits in [DI] add process tags to dynamic instrumentation #7132

Motivation

• DMs

[github-actions]

Overall package size

Self size: 4.39 MB
Deduped: 5.21 MB
No deduping: 5.21 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | import-in-the-middle | 2.0.0 | 68.46 kB | 797.03 kB | | dc-polyfill | 0.1.10 | 26.73 kB | 26.73 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.50%. Comparing base (758d8c3) to head (9d9607a).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7176   +/-   ##
=======================================
  Coverage   84.50%   84.50%           
=======================================
  Files         524      524           
  Lines       22472    22472           
=======================================
  Hits        18990    18990           
  Misses       3482     3482           

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[datadog-datadog-prod-us1]

⚠️ Tests

✨ Fix all issues with Cursor

⚠️ Warnings

❄️ 1 New flaky test detected

IAST - overhead-controller - integration vulnerability sampling algorithm should report vulnerability only in the first request from vulnerability sampling algorithm (Datadog) (Fix with Cursor)

timeout, additionally:
AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:

undefined !== 'web'

    at /Users/runner/work/dd-trace-js/dd-trace-js/packages/dd-trace/test/appsec/iast/overhead-controller.integration.spec.js:50:16
    at FakeAgent.messageHandler (/Users/runner/work/dd-trace-js/dd-trace-js/integration-tests/helpers/fake-agent.js:152:9)
    at FakeAgent.emit (node:events:508:28)
    at /Users/runner/work/dd-trace-js/dd-trace-js/integration-tests/helpers/fake-agent.js:290:11
    at Layer.handleRequest (/Users/runner/work/dd-trace-js/dd-trace-js/node_modules/router/lib/layer.js:152:17)
...

ℹ️ Info

🧪 All tests passed

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 9d9607a | Docs | Datadog PR Page | Was this helpful? Give us feedback!}

[pr-commenter]

Benchmarks

Benchmark execution time: 2026-01-05 21:26:22

Comparing candidate commit 9d9607a in PR branch tlhunter/process-tags-cleanup with baseline commit 758d8c3 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 294 metrics, 26 unstable metrics.