Mergebot mention in code review does not work

[bhankas]

If merge command is invoked as part of code review that approves the changes, mergebot does not get invoked. A separate, new independent comment is required. While that is fine, a code review with approval is a fairly strong signal. It'd be nice to have it supported.

[Mic92]

The main comment is fine but it shouldn't be part of the comments that one can hide.

[martinetd]

Didn't work in main comment here:
NixOS/nixpkgs#313385

I thought it was because it wasn't the only line in the message, but the code seems to ignore unrelated lines just fine:

    for line in stripped.split("\n"):
        if re.match(rf"^@{bot_name}\s+merge$", line.strip()):
            return merge_command(issue, settings)

So I guess there really is a difference with review?