Close vote flags are reviewed by the community in the Close Votes review queue. Based on the results of this voting, these flags can be declined if reviewers disagree that the question should be closed. Currently the flags are simply declined, with no reason provided.
I think it would be useful to provide some context in the decline reason. I'd suggest having the system automatically add a link to the review that triggered the decline in the text of the flag response. It might help to explain situations like this, so people are aware that moderators did not decline these flags.
This would also be helpful if the system gains the ability to decline "very low quality" or "not an answer" flags on unanimous votes in the Low Quality Posts queue. It could prevent a few angry "stupid moderators declined my flag" posts on Meta.