Backport #15399: flare: Do not scrub pprof files

[L3n41c]

What does this PR do?

Backport #15399

Fix the pprof profile collection with agent flare --profile.

Motivation

pprof profiles are currently corrupted by the flare scrubber.

Additional Notes

This fixes a regression introduced in #14234.

Possible Drawbacks / Trade-offs

Describe how to test/QA your changes

Generate a flare with pprof profiles with agent flare --profile 60.

The pprof files should now be readable by go tool pprof.
Before this fix (check with 7.43.0-rc.3 if you want to compare), go tool pprof was failing with this error:

$ go tool pprof -raw lenaic-agent-dev_lhuard_fr-7.43.0-rc.3/profiles/core-cpu.pprof | head
lenaic-agent-dev_lhuard_fr-7.43.0-rc.3/profiles/core-cpu.pprof: decompressing profile: flate: corrupt input before offset 566
failed to fetch any source profiles

Reviewer's Checklist

• If known, an appropriate milestone has been selected; otherwise the Triage milestone is set.
• Use the major_change label if your change either has a major impact on the code base, is impacting multiple teams or is changing important well-established internals of the Agent. This label will be use during QA to make sure each team pay extra attention to the changed behavior. For any customer facing change use a releasenote.
• A release note has been added or the changelog/no-changelog label has been applied.
• Changed code has automated tests for its functionality.
• Adequate QA/testing plan information is provided if the qa/skip-qa label is not applied.
• At least one team/.. label has been applied, indicating the team(s) that should QA this change.
• If applicable, docs team has been notified or an issue has been opened on the documentation repo.
• If applicable, the need-change/operator and need-change/helm labels have been applied.
• If applicable, the k8s/<min-version> label, indicating the lowest Kubernetes version compatible with this feature.
• If applicable, the config template has been updated.