Fix commented_by for any approver rule

What does this MR do?

This fixes the new commented_by field for the "Any Approver" rule, which needed different logic to return the valid commenters.

Previous context: !39237 (merged)

Related #10294 (closed)

Closes #235884 (closed)

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
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Security

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