feat: allow proxy rules logs to be hidden when inserted by plugin

[mraerino]

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Summary

ref CRE-1135

We have a need to be able to hide the "proxying to ..." logs for the internal dev server handler.

This is a pretty scrappy solution but the only one i could find without a lot of refactoring.

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📊 Benchmark results

• Dependency count: 1,326
• Package size: 298 MB
• Number of ts-expect-error directives: 1,029