fix(asm): only report actor.ip on attack (backport #4316)

[mergify[bot]]

This is an automatic backport of pull request #4316 done by Mergify. Cherry-pick of f2a52a27a14dc615edb9fd13e220a74f5d6828ba has failed:

On branch mergify/bp/1.5/pr-4316
Your branch is up to date with 'origin/1.5'.

You are currently cherry-picking commit f2a52a27.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   ddtrace/contrib/trace_utils.py
	new file:   releasenotes/notes/asm-fix-ipaddress-actorip-only-on-attack-c118a0560c0c0119.yaml
	modified:   tests/appsec/test_processor.py
	modified:   tests/contrib/flask/test_flask_appsec.py
	modified:   tests/tracer/test_trace_utils.py

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   ddtrace/appsec/processor.py

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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