flag current version for NHR if available

[eviljeff]

Fixes: mozilla/addons#1988

Description

Tighten the definition of a report that is individually reviewed, and align how we flag for needs human review with that.

Context

There are a bunch of issues logged (mainly unlisted related) that I duped to mozilla/addons#15179 and this tries to address them all - but mainly by avoiding cases where we were pushing unlisted only add-ons through cinder in the first place.

Appeals on unlisted are covered by mozilla/addons#15182 and this doesn't try to address that issue - only not regress the listed version case.

Testing

• enable all DSA/abuse related waffle switches
• report an unlisted only add-on for abuse, without any version of it installed in Firefox;
• see no job in Cinder in any of the queues. (and nothing in the logs indicating an exception was raised)
• report an add-on that has at least one approved or awaiting_review versions locally, without any version of it installed in Firefox, for policy violation in the add-on;
• see the add-on in the manual review queue in reviewer tools, with the current version (the most recent approved version; or the awaiting review version if none are approved) flagged for human review.
• reject that version
• appeal the rejection (email with the link will be in django email fakemail)
• see the add-on in the manual review queue in reviewer tools, with the most recent listed version flagged for human review.

Checklist

• Add #ISSUENUM at the top of your PR to an existing open issue in the mozilla/addons repository.
• Successfully verified the change locally.
• The change is covered by automated tests, or otherwise indicated why doing so is unnecessary/impossible.
• Add before and after screenshots (Only for changes that impact the UI).
• Add or update relevant docs reflecting the changes made.

[sentry-io]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: src/olympia/abuse/cinder.py

Function	Unhandled Issue
flag_for_human_review	AttributeError: 'NoneType' object has no attribute 'id' olympia.abuse.tasks.report_to... Event Count: 6
flag_for_human_review	AttributeError: 'NoneType' object has no attribute 'id' olympia.abuse.tasks.handle_escalate... Event Count: 4
flag_for_human_review	AttributeError: 'NoneType' object has no attribute 'id' olympia.abuse.tasks.appeal_to... Event Count: 3

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