[Performance] Optimize header sanitization guard

[gonzaloriestra]

WHY are these changes introduced?

The sanitizedHeadersOutput function is called for every network request to prepare debug logs, even when debug logging is disabled. This results in unnecessary object iteration, string manipulation, and regex searches on every request.

WHAT is this pull request doing?

• Adds an early return guard to sanitizedHeadersOutput that returns an empty string immediately if the CLI is not in verbose mode and not in a unit test.
• Moves the sensitive keywords array to a module-level constant to avoid re-allocation on every call.

How to test your changes?

CI

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing — I've identified the correct bump type (patch for bug fixes · minor for new features · major for breaking changes) and added a changeset with pnpm changeset add

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PR created automatically by Jules for task 12902459395274013251 started by @gonzaloriestra

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