There are Wikimedia guidelines here, the table just says no to commercial use without clarifying (the part about NZ further down also doesn’t clarify): https://commons.m.wikimedia.org/wiki/Commons:Country_specific_consent_requirements

I am guessing there is some editorial allowance here, otherwise a freelance photographer couldn’t be paid by a newspaper. So I’m thinking the photographer selling it for editorial use on stock image sites may not actually break any rules, though I have failed to find those rules.

I did find this from the Police:

However, you can take and/or publish photos or film of people where there is no expectation of privacy, such as a beach, shopping mall, park or other public place.

https://www.police.govt.nz/faq/what-are-rules-around-taking-photos-or-filming-public-place?nondesktop